Everyone gets the same 168 hours in a week, but no two students spend them the same way. This chapter helps you find real study time inside your real life, with its job, commute, family and need for sleep, and build a weekly plan that bends instead of breaking.
The 168-hour week
Seven days times twenty-four hours is 168 hours. That number sounds big until you start to fill it in. Sleep takes about a third of it. Classes and lab take more. Many BIO 243 students also work, drive to campus, care for children or parents, or help run a household. By the time those hours are counted, the time left for studying can feel very small.
That is exactly why it helps to count. Most people guess wrong about where their time goes. Some think they have no free time at all, and then discover two hours a day lost to their phone. Others think they have plenty of time, and then discover that work and commuting eat most of their afternoons. A plan built on guesses breaks in the first week. A plan built on real numbers has a chance.
Figure 2.1 shows one possible week for a fictional full-time student who works part time. Your numbers will be different, and that is the point. The figure is a model for the exercise you are about to do.
How much study BIO 243 really needs
Your BIO 243 syllabus asks for about 4 to 6 hours a week of study for lecture, plus 4 to 6 hours a week for lab. That is 8 to 12 hours a week outside of class for this one course. For many students, that is more than they have ever studied for a single class. It is also realistic. A&P has a heavy vocabulary load, a fast pace and a cumulative final, and the hours are what it takes to keep up.
What counts as study time
Study time is any time you are actively working with BIO 243 material. That includes:
- Reading the OpenStax chapter before class, and working on the Reading Guide.
- Doing Guided Practice and taking quizzes.
- Rewriting and reconciling your notes after lecture (Chapter 4 shows you how).
- Making and practicing flashcards, including in CircleIn.
- Reviewing lab models, slides and terms between lab sessions.
- Going to Supplemental Instruction (SI) sessions or tutoring.
Time sitting in lecture or lab does not count toward the 8 to 12. Neither does time with the textbook open while you text, watch a show or scroll. Study hours are about attention, not about how long a book sits on the table.
An honest talk about your load
If you did the math in the box above and found only 4 or 5 free hours in your whole week, you have learned something important. It does not mean you cannot take A&P. It does mean something has to give, and it is far better to face that now than after Exam 1. You might be able to shift work hours, find study time on your commute, or get help with a responsibility at home. Sometimes the right answer is a lighter course load this term so you can give A&P the time it needs. That is a decision to talk through with your academic advisor and, if you receive aid, with Financial Aid, because changing your load can affect both. Chapter 13 covers how to have those conversations.
About how many hours a week outside of class does the BIO 243 syllabus ask you to study, counting lecture and lab together?
- 2 to 3 hours
- 4 to 6 hours
- 8 to 12 hours
- 20 hours or more
The syllabus asks for about 4 to 6 hours for lecture plus 4 to 6 hours for lab. Added together, that is roughly 8 to 12 hours a week.
Building your weekly template
A weekly template is a picture of a normal week, with study blocks placed on purpose. You build it once, then reuse it every week, adjusting for exam weeks and surprises. Students who study at the same times each week spend less energy deciding when to study, and more energy actually studying.
Step by step
- Put in sleep first. Before anything else, block the hours you will sleep. Sleep is not wasted time. It is when your brain stores what you learned that day (more on that below and in Chapter 5).
- Add the fixed blocks. Class, lab, work shifts, commuting, and family duties that cannot move.
- Place a short study block soon after each BIO 243 lecture. Even 30 to 45 minutes on the same day to rewrite and reconcile your notes makes the material stick far better than waiting a week.
- Place reading blocks before lecture. Reading the chapter before class turns lecture into your second look at the material.
- Add one longer block for practice. Once a week, plan 90 minutes to 2 hours for deeper work, such as drawing processes or doing practice questions.
- Add a weekly review block. Pick a time at the end or start of each week (many people choose Sunday) to review the week's chapters and plan the next week.
- Leave some white space. A plan with no free time breaks the first time anything goes wrong. Leave a buffer.
Figure 2.2 shows what this can look like for a fictional student named Jordan.
Energy matters as much as time
An hour is not always an hour. One hour when you are rested and alert can be worth two hours when you are exhausted after a closing shift. So as you place study blocks, think about energy, not just time on the clock.
Many people feel most alert in the late morning, feel a dip in the early afternoon (especially after a big lunch), and get a second wind in the early evening before energy fades at night. Figure 2.3 sketches that common pattern. But people differ. Some are true morning people, and some think best late at night. Your job is to notice your own pattern and protect your best hours for your hardest work.
Match the task to the energy
Not all study tasks need the same amount of brain power. Reading a new chapter for the first time, working through a hard process, or drawing a diagram from memory takes a lot. Running through flashcards you mostly know, organizing your notes, or checking due dates in Blackboard takes much less. When you know which is which, you can match them to the right time of day.
Use small moments, safely
If you ride a bus, wait in a pickup line or sit through a break at work, you have small pockets of time. Five to ten minutes of flashcards on your phone in those pockets adds up to hours over a semester. Keep a CircleIn deck or a photo of your vocabulary list ready for those moments. One firm rule: if you drive, the commute is not study time for reading or flashcards. Keep your eyes on the road.
Small blocks beat marathons
Long study marathons feel serious, but attention does not last for hours at a time. Most people focus best in blocks of about 25 to 50 minutes followed by a short break. A popular version is the Pomodoro Technique, created by Francesco Cirillo: work for 25 minutes on one task, take a 5-minute break, and repeat, with a longer break after four rounds. You do not have to follow it exactly. The idea is what matters: a clear start, a clear stop, and one task at a time.
How to make a block work
- Name one task. "Study A&P" is too vague. "Make 15 flashcards from the Chapter 4 connective tissue table" is a task you can start and finish.
- Put the phone out of reach. Silence it and put it in another room or a bag. Even a phone sitting face down on the table can pull at your attention.
- Use a timer. Knowing a break is coming makes it easier to stay focused now.
- Take a real break. Stand up, stretch, refill your water. Scrolling social media is not much of a break for your brain and easily turns 5 minutes into 30.
- End by testing yourself. Spend the last few minutes of each block closing your notes and recalling what you just studied.
Write "if, then" plans
One of the most useful findings about planning comes from research on implementation intentions. These are plans written in an "if, then" form: "If it is Tuesday at noon, then I go to the Library and practice my Chapter 4 flashcards." Many studies have found that people who make specific "if, then" plans are more likely to follow through on their goals than people who only state the goal (Gollwitzer, 1999; Gollwitzer & Sheeran, 2006). The plan works because it links the action to a clear cue, so you do not have to decide all over again each time.
Which study plan is written in the most useful way?
- "I will study A&P more this week."
- "I will study A&P for five hours on Sunday."
- "I will try to look at my notes when I have time."
- "If it is Monday after lunch, then I read OpenStax 4.2 at the Library and fill in that part of the Reading Guide."
The last plan names a cue (Monday after lunch), a place and one specific task. That kind of "if, then" plan is the easiest to follow through on. One giant Sunday session is a cram session, and vague plans rarely happen.
The "never cram" logic
The syllabus says not to cram, and that is not just a nice idea. Here is the reasoning. Imagine two students who each study 8 hours for Exam 1. One studies 8 hours the two days before the exam. The other studies about an hour a day across the two weeks before the exam. The total time is the same. But decades of research show that spreading study out over time, called spacing or distributed practice, leads to much better long-term memory than packing the same time into one session (Cepeda et al., 2006).
Cramming can sometimes get you through a test the next morning. But much of that learning fades within days, and BIO 243 has a cumulative final. Material you crammed for Exam 1 will be mostly gone by the final, and you will have to learn it all over again. Material you spaced out will still be there, and reviewing it will be fast. Spacing is not just a better way to study. Over a whole semester, it is less total work.
Chapter 5 explains why memory works this way, and Chapter 6 shows you exactly how to space your practice. For now, the planning lesson is simple: study BIO 243 a little on most days, not a lot on one day.
Protect your sleep
When time is tight, sleep is often the first thing students cut. That is a costly trade. An expert panel convened by the National Sleep Foundation recommends 7 to 9 hours of sleep a night for young adults and adults (Hirshkowitz et al., 2015). Sleep is not just rest. While you sleep, your brain works to stabilize and organize memories from the day, which is part of how studying turns into long-term learning.
The research with college students points in the same direction. One study tracked students in a college chemistry course with wearable sleep trackers and found that students who slept more, and more consistently, across the term tended to earn better grades (Okano et al., 2019). That kind of study shows a link, not proof that sleep alone caused the higher grades, but it fits with a large body of lab research on sleep and memory.
Here are a few ways to protect your sleep in a busy week:
- Block your sleep in the template first, and treat it like a work shift you cannot skip.
- Try to keep a similar bedtime and wake time most days, including weekends.
- Stop heavy studying 30 to 60 minutes before bed. A short, calm flashcard review is fine.
- Avoid caffeine late in the day. Chapter 12 looks at caffeine and energy drinks honestly.
When the plan breaks
Your plan will break. A child gets sick, a boss asks you to cover a shift, the car will not start, a quiz takes longer than you expected. This is not a sign you are bad at planning. It is a sign you have a real life. The question is not whether the plan will break, but what you do when it does.
Expect things to take longer
Psychologists have a name for our habit of underestimating how long tasks will take: the planning fallacy. In classic studies, students predicting how long it would take to finish a major project were too optimistic, even when they knew similar projects had run late in the past (Buehler et al., 1994). The fix is simple. When you plan a task, add a buffer, and leave some open time in your week that is not assigned to anything.
A simple plan for broken plans
Figure 2.4 shows a quick way to decide what to do when you miss a study block.
The most important box in that chart is "shrink it." When you cannot do the full block, do a 15-minute version instead: one section of the Reading Guide, or one pass through a flashcard deck. A small version keeps the habit alive and keeps you in touch with the material. Students rarely fall behind because of one missed block. They fall behind because one missed block turns into "I will catch up this weekend," and then the weekend fills up too.
The weekly review
Once a week, sit down for 15 to 20 minutes with your template, your syllabus and Blackboard. Ask three questions. What is due this coming week? Which study blocks worked last week, and which did not? What will I change? This short meeting with yourself is where your plan gets better over time. It is also the "Adjust" step in the weekly loop from Chapter 1.
You miss Tuesday's one-hour study block because of an extra work shift, and you cannot move it this week. What is the best next step?
- Do a 15-minute version today, then protect your next scheduled block.
- Skip it and plan to catch up with a long session the night before the exam.
- Give up on the template, since it clearly does not work.
- Stay up until 2 a.m. to make up the full hour plus extra.
A short version keeps the habit and the material alive without stealing sleep. A long catch-up session later is cramming, and dropping the whole plan over one missed block wastes the work you put into building it.
Your five-minute action
- Write your fixed hours for the week and subtract them from 168.
- Place at least four BIO 243 study blocks in your calendar for next week, including one right after a lecture and one weekly review.
- Turn one block into an "if, then" plan with a time, a place and one specific task.
Key terms
- 168-hour week
- The total number of hours in a week, used as the starting point for planning where your time goes.
- Fixed hours
- Time already committed to things that cannot easily move, such as sleep, class, work and commuting.
- Weekly template
- A reusable plan of a normal week with study blocks placed at set times.
- Time blocking
- Assigning a specific task to a specific block of time on your calendar.
- Study block
- A focused session of about 25 to 50 minutes on one named task, followed by a short break.
- Pomodoro Technique
- A method of working in 25-minute focused blocks with 5-minute breaks, created by Francesco Cirillo.
- Implementation intention
- An "if, then" plan that links a specific action to a specific cue, such as a time and place.
- Spacing
- Spreading study of the same material across several sessions over time instead of cramming it into one.
- Cramming
- Packing most of your study into one long session right before a test, which leads to fast forgetting.
- Planning fallacy
- The common habit of underestimating how long a task will take, even when past tasks ran late.
- Weekly review
- A short weekly meeting with yourself to check what is due, what worked, and what to change.
Where this comes from
- Buehler, R., Griffin, D., & Ross, M. (1994). Exploring the "planning fallacy": Why people underestimate their task completion times. Journal of Personality and Social Psychology, 67(3), 366-381.
- Cepeda, N. J., Pashler, H., Vul, E., Wixted, J. T., & Rohrer, D. (2006). Distributed practice in verbal recall tasks: A review and quantitative synthesis. Psychological Bulletin, 132(3), 354-380.
- Gollwitzer, P. M. (1999). Implementation intentions: Strong effects of simple plans. American Psychologist, 54(7), 493-503.
- Gollwitzer, P. M., & Sheeran, P. (2006). Implementation intentions and goal achievement: A meta-analysis of effects and processes. Advances in Experimental Social Psychology, 38, 69-119.
- Hirshkowitz, M., Whiton, K., Albert, S. M., Alessi, C., Bruni, O., DonCarlos, L., and colleagues. (2015). National Sleep Foundation's sleep time duration recommendations: Methodology and results summary. Sleep Health, 1(1), 40-43.
- Okano, K., Kaczmarzyk, J. R., Dave, N., Gabrieli, J. D. E., & Grossman, J. C. (2019). Sleep quality, duration, and consistency are associated with better academic performance in college students. npj Science of Learning, 4, 16.
- Betts, J. G., Young, K. A., Wise, J. A., Johnson, E., Poe, B., Kruse, D. H., Korol, O., Johnson, J. E., Womble, M., & DeSaix, P. (2013). Anatomy and physiology. OpenStax. (Chapter 3: protein synthesis and organelles.)