A great learning during lockdown has been about Breathing Right. Here is a tip I learned which has worked wonderful for me
Incorporate Nasal Only breathing between your sets during strength Training. By closing your mouth and breathing entirely through the nose, your muscles will receive approx. 20% more oxygen. This will recharge your energy systems more quickly and more completely. Given that majority of weight training is rest time, the cumulative effect of breathing this way will have a significant impact on the amount of volume you can handle in a workout.
This will help:
Faster recovery between sets
Fatigue less during sets
More energy through the entire workout
This will help to increase volumes which means more gains and muscles
Try it out !