This is the main muscle building workout I have done since July 2020. Funk Roberts is a popular fitness YouTuber who focuses on MMA training. There are 6 exercises in the workout; you do each one repeatedly for 40 seconds, rest 20 seconds, then do the next exercise in the circuit. This is an example of metabolic training, and will steadily build muscle and burn fat at the same time.
There’s only 1 leg exercise in the workout, but the version of the squat presented here also has the benefits of deadlifts. Sometimes I switch out the squat and do alternating lunges instead.