Well there is a different method in training for speed + explosive power vs just speed or stamina or just power.

You have to do loads of reps with HEAVY weights and gas yourself out. When you're gased it's like Rozzy said, you lose your power but it's not from not being loose it's like doing burnouts in weightlifting you do a lift until you can't lift anymore AT ALL not just heavy weights but ANY weights.


The only way to help you out with stamina is to drain yourself of energy and then go back to work and throw your power punches and FOCUS it takes more focus and desire than anything else to maintain your power throughout a fight. You'll feel tired and you'll feel like you can't throw anymore but that's just your brain trying to trick you and your body trying to be lazy...don't give in. You have to train to be able to throw punches for 12 rounds anyway but you can train to throw whatever type of punch you want to for 12 rounds so if you want to land 12 rounds of bombs then train for it