Striking

Gassing out in sparring is rarely just about poor fitness. Most of the time, it is tension. When you are anxious or trying too hard to win exchanges, your shoulders tighten, your fists clench, and your legs stiffen. That constant muscle contraction quietly drains your energy. Add poor breathing on top of that, especially holding your breath during combinations, and your heart rate spikes faster than it should. The result is that heavy, drowning feeling halfway through the round. Learning to relax under pressure and control your breathing can change your endurance more than adding extra miles to your roadwork.