Answer:
personally my favorite would have to be wallsits
Explanation:
Wallsits is were you stand near a wall and act like your sitting on a chair but its not your just leaning against a wall )) I love wall sits because I can feel my leg muscles getting tighter and stringer by the minute , I also like to feel the burn haha ( no pun intended)
If I had to choose an alltime favorite it would be mountain climbers because i enjoy working on my torso
