The side plank trains the lateral (side) core muscles, a genuinely different demand than the forearm plank's front-facing hold. You should be able to hold a forearm plank for at least 30-45 seconds with good technique before attempting this.
Progressing to more demanding bodyweight exercises should be guided by your actual current capacity, not a fixed timeline. This exercise does not treat any spinal condition.
Keep breathing steadily and avoid holding your breath throughout the hold.
Sets
2-3 sets per side
Reps
Hold for time
Duration
Under 15 minutes
Rest
30-45 seconds between sets
Estimated completion time: Under 15 minutes for the full set of 2-3 sets per side, including rest between sets.
These are general, real starting points — not an automatic prescription for every user.
Perform the side plank with your knees bent and stacked on the floor, rather than legs fully extended.
Hold for a longer duration, or lift the top leg slightly for an added balance challenge.
Primary Muscles
Obliques, Core
Secondary Muscles
Shoulders, Glutes
Movement Pattern
isometric hold
Do not attempt this if you cannot yet hold a forearm plank for at least 30 seconds. Stop if significant or unusual pain occurs, particularly in the shoulder or lower back. Stop if concerning symptoms occur.
Suitability depends on the individual — this list isn't an absolute contraindication for everyone in these categories.
Goals
Same movement pattern, different equipment — useful if you don't have what this exercise calls for.
How often can I do this exercise?
A common starting point is 2-3 sessions per week with at least a day of rest for the same muscle group in between, but this depends on your overall programme, recovery, and goals — start conservatively and progress gradually.
Is this exercise safe if I have a current injury or health condition?
This exercise carries specific cautions for some people (see "Who Should Be Cautious?" above) — suitability depends on your individual situation, so check with your doctor or physiotherapist if any of those apply to you.
Is this exercise appropriate for a beginner or intermediate exerciser?
This is classified as intermediate. If it feels too demanding at first, use the regression above and progress once it feels controlled.
References