It’s probably going to be just one. If you’ve never sprinted all-out before, let me just tell you, you’re not going to feel like doing 20 sprints in one session, no matter how brief they may be.
Sprinting, so far from interfering with mass gains, will actually potentiate them. Sprinting is an extremely fast-twitch activity by nature, and will stimulate IIBs like nothing else. Now, I’m not saying that sprinting will make you huge, but they can increase relative proportions of IIB fibers, which have the greatest strength and growth potential.
Before you go, know that sprinting is one of the most physically taxing activities you can perform. Don’t take this as an insult, but be sure you’re ready to sprint. Always perform a thorough dynamic warmup and run some light sprints before you get into the work sets. If you have any previous injuries, make sure they will not interfere with your performance. Forces encountered during sprinting can approach 5x bodyweight, and this all on one leg. If you haven’t done it before, you will be sore the first few times, particularly in the shins. Don’t be ashamed if you need to take a few sessions and build up before you go all out.[/quote]
Thanks for the reply. Yea I Kind of figured 1,2, and 3 seemed like a a lot; but each single one seemed like too little.