Reduced CNS Fatigue
Feeling tired or sleepy during or after a heavy workout are likely due to central nervous system (CNS) fatigue. While exhausting your muscles is a good thing for hypertrophy (building muscle) — you can’t know how far you can go until you push yourself to the limit — training to failure every time can be a detriment. With high-volume training, the intensity is often low enough to keep most athletes from developing CNS fatigue, but still at a point where workouts remain a challenge.
Next: Build Muscle & Burn Fat Simultaneously
