Hello Guys Im an amatuer boxer and I lift weights alot, along with tons of conditioning. I do the 5x5 routine 3 times a week Sunday - Bench Press Squats Bent over Rows Lunges ( 15x3 ) Tuesday Deadlift Military Press Chinups Thursday Bench Press Squats Bent over Rows Lunges ( 15x3 ) My step dad is a black belt in shotokan karate (JKA) and Hida Tuka Nishyama gave him all his belts. He is telling me that this weight routine is just gonna make me slow and unflexible, but i tell him its just a old myth that has been proven wrong. I tell him it will get me very explosive and will give me great KO power, who is correct here? dont forget, I do 5 rounds of heavy bag a day, 100+ burpees, and spar atleast 5 rounds every day, and alot more conditioning and usually skip. Who is correct here?