With a grade 1 or milder grade 2 hamstring injury, light hinging will be possible within days or a week or so after the initial injury. Squatting can cause problems, so tentatively feel this task out. Sometimes an isometric wall hold squat is a great transition to full range of motion squats in a few days or weeks.

Are squats good for hamstring injury?

Weighted Squats

This exercise is great for hamstrings, quads, and the core.

Is it OK to workout with a pulled hamstring?

Returning to strenuous exercise too quickly could make your injury worse, but avoiding exercise for too long can cause your hamstring muscles to shrink and scar tissue to form around the tear. To avoid this, you should start doing gentle hamstring stretches after a few days, when the pain has started to subside.