How to work out effectively in a few minutes?

I don’t know if it has been scientifically tested, but here you go: WebMD – When you don’t have 30 or 60 minutes for a full workout, the 7-minute workout packs in a full-body exercise routine in a fraction of the time.

Do 20 sit-ups, 20 push-ups, run ½ mile.

There is a free app that I use (although I ended up paying a few bucks for it). It’s called “7 minutes”.

If you want a 20 minute workout try this https://www.youtube.com/watch?v=kdpHMdFScm8.

Are you talking about high intensity interval training stuff?

Kettlebells

Do a lot of planks, wall sits, balancing and stretching routines as well as high intensity cardio.