Since I'm currently not holding any regular conditioning classes (due to our summer break), I add 15 minutes of circuit training at the end of each Shinergy class. On thursday, I heard one of my athletes say "those were the hardest 15 minutes of my life". Seems like I'm doing something right. Our circuit follow a certain scheme: 40 seconds of strength-endurance exercise 1 , followed by 20 seconds of rest 40 seconds of kettlebell-swings, followed by 20 seconds of rest 40 seconds of some other (fixed) strength-endurance exercise, followed by 20 seconds rest repeat for strength-endurance exercise 2,3,4,5 Hence, the circuit takes 15 minutes to finish and consists of five rounds of different strength-endurance exercises (usually done using suspension trainer or bodyweight only), five rounds of kettlebell swings and five rounds of some rather arbitrary strength-endurance exercise (e.g. rope-skipping, shadow-boxing, ...) Today, we did the following circle: Atomic push-ups -...