When you do exercises back-to-back with little rest (pre-exhaustion training), it feels harder than doing exercises with normal rest breaks (traditional training).

When you do a special workout called pre-exhaustion, you get tired faster and end up lifting less total weight compared to regular workouts.

Doing a simple exercise right before a harder one with no break doesn't make you stronger or build more muscle better than just doing regular workouts, according to current research.

When you exercise until your muscles can't do any more reps, you feel much more tired and uncomfortable compared to stopping earlier, no matter how heavy or light the weights are.

Doing a special warm-up before lifting weights lets you finish your workout faster while still building just as much muscle.

When you tire out a muscle with one exercise before doing a bigger workout, you can't do as many reps in the big workout, so you end up doing less overall exercise than if you just did the big workout alone.