Want stronger legs but don't have any equipment? Try this trainer's fast-paced, four-minute workout

Man performing jumping lunges outside.

Squats are a leg workout staple, particularly if you’re exercising at home. But if you’ve been doing them for a while, there will inevitably come a point where they start to feel too easy.

So what do you do if you want to keep challenging your muscles? Increasing the weight you’re lifting is one option, but if you don’t have weights at home you could swap your next set of squats for a more difficult variation.