Planner
Weekly Split Planner
Assign each day, then see whether every muscle group is actually getting the 48 to 72 hours it needs before you hit it hard again.
Frequently Asked Questions
How many rest days do I need between training the same muscle?
Roughly 48 to 72 hours between hard sessions for the same muscle group. Lighter or technique-focused work can come sooner because it generates less fatigue. Your whole body never needs to rest at once, which is the entire logic behind splits.
Is training a muscle twice a week better than once?
For most lifters, yes, though not because the muscle grows faster per session. Splitting the same weekly volume across two sessions means each set is performed fresher, so more of your work is productive.
What is the best training split?
The one you can sustain that gives each muscle 48 to 72 hours between hard sessions. Full body suits three days a week, upper/lower suits four, and push/pull/legs suits six. All of them land near twice per muscle per week.
Can I train back to back days?
Yes, as long as consecutive days train different muscle groups, or one of the sessions is deliberately light. Training the same muscle hard on consecutive days tends to reduce performance without adding stimulus.
The recovery timelines behind this are in how long to rest after a workout and training frequency.