i'm thinking about going to a 3 day monday, wednesday, friday, split with cardio tuesdays and thursdays. how would you recomend i split my different muscle groups for a 3 day. im looking to gain more muscle mass still. the only reason im going to a 3 day is because i wanna do sprints twice a week to get faster for football. i just need to improve my times in sprints like the 40 yard dash, to make me faster on the field. can i do this and still keep putting on muscle mass? also, what would you guys recomend for a speed training program?