By Dan Eldridge, Founder of GRITFIT.AI
A three-day gym routine can look easy on paper. Then work runs late, something comes up at home, and Wednesday's session disappears.
That's the week I want a training plan to deal with. Before choosing exercises, I'd start with a simpler question: which three sessions can you realistically make room for?
You can be serious about training and still have a normal life around it.
Pick the days you can protect
Put the sessions in your actual calendar. Monday, Wednesday and Friday is one option. Tuesday, Thursday and Sunday might fit better. Allow time to get there, warm up and get home, rather than counting only the minutes spent lifting.
If three days is an ambitious target right now, make two the starting point and build from there. NHS guidance for adults aged 19 to 64 includes strengthening all major muscle groups on at least two days a week, alongside aerobic activity. Three gym visits are one possible arrangement, rather than a requirement for everyone. NHS activity guidance
Give the week a simple structure
For someone organising three sessions, I'd consider a full-body approach first. It gives each visit a clear job and makes the week easier to rearrange.
The 2026 ACSM resistance training guidance emphasises regular participation, working the major muscle groups and adapting the programme to the person. You have options in the equipment you use; a useful plan does not depend on having a barbell available. ACSM guidance
For example, you could arrange the week like this:
| Day | Example session |
|---|---|
| Monday | Full-body A |
| Wednesday | Full-body B |
| Friday | Full-body A |
That leaves days between gym sessions. Move the days to fit your week.
Here is an illustrative structure for a generally healthy adult who already knows the movements:
| Session | Lower body | Upper body push | Upper body pull | Additional movement |
|---|---|---|---|---|
| A | Leg press | Machine chest press | Seated cable row | A familiar hip hinge |
| B | A comfortable squat variation | Incline press | Lat pulldown | A simple carry or trunk exercise |
The following week could run B, A, B. Choose versions you can perform comfortably, and get a qualified trainer's help if you are learning them.
As a modest starting example, you might use two working sets of eight to twelve controlled repetitions for each main lift, with suitable warm-up sets first and enough rest to repeat the movement well. That example needs adjusting for your experience, recovery and goal. It is not a test to pass.
Research comparing resistance training programmes finds that several combinations of load, sets and frequency can improve strength and muscle size. There is room to choose something workable. Currier and colleagues
Record enough to make the next visit useful
Write down the exercise, the weight and the repetitions you actually completed. Add a short note if the session felt unusually difficult or you had to change something.
Keep the exercise choices stable enough to compare sessions. If every visit uses a completely different routine, it becomes harder to explain what has improved and what needs attention.
Have a plan for a missed day
Suppose Wednesday falls through. Look at the rest of the week before moving anything. Can you move the session without squeezing several demanding days together? If not, continue with the next sensible session and leave the missed one behind.
I would avoid turning the following workout into a punishment session. A plan should help you make a useful decision after a disrupted week.
That is part of why I'm building GRITFIT: to keep your available time, equipment and recorded training together when planning what comes next. If you'd like to help test it, you can apply for the private beta.
Which part of your training week is usually hardest to protect?