If you’re ready to try a slightly more advanced set of exercises, this is a variation I like. I do four sets, trying to beat my time from the previous session. I prefer doing the Hindu squats because being on your tiptoes engages your quads and core more than a regular squat.
And no matter how fit and strong you are, a plyometric pushup is always challenging due to the fact you’re exerting maximum force on each rep. One little caveat, however, about the plyometric pushups: I recommend stretching your wrists out beforehand and performing the exercise on a mat to soften the impact.