Try to stay loose when sparring, training, fighting etc.
Stay as relaxed as possible and when you need to explode, flex every muscle in your body for maximum power.When flexing, clench your fist, brace your abs as if your preparing to take a punch and squeeze your glutes as though you want to hold a coin between your butt cheeks!
You’ll notice, it forces all the other muscles in your body to contract simultaneously.
When you execute a technique, i.e, throw a punch, kick, takedown etc., stay relaxed and loose until just before the moment of impact.
At that point exhale explosively, squeeze your fist, brace your abs and squeeze your butt as hard as you can.
You’ll notice a huge boost in strength and power. Practice, practice, practice!