Can the workout program Insanity improve my sprint speed?
Best Answers
Two answers. 1. If you are already a trained sprinter who is in shape. No. My own opinion is that it will most likely have a negative impact. It is in no way a well designed program for sports performance. read more
But this will only help your sprint speed on your bike. It will not help you run faster. If you want to run faster, you will have to do intervals off of your bike. read more