Rest between sets

<60 secs: Increase endurance, burn more calories

1-2 mins: Building more muscle, and some endurance benefits

2-3 mins: Building more muscle and strength

3-5 mins: Pure strength and power purposes

Compound movements may be better with 1-2 mins rest, while isolation exercises with 45-90 sec rest.

Incorporate all rest intervals, because their benefits transfer across.