For the abdominal circuit, set a timer for 5 minutes. If you finish the sets of 12 then add 3 to everything and continue to do so until the clock runs down to zero. When completing the end circuit, set a timer for 10 minutes and complete as many rounds of it in that time. I've used 3 as a guide but you may be able to do more :-)
We love these adjustable dumbbells from Rep Fitness. They take up very little space and are also very durable compared to other adjustable dumbbells on the market.
Do this workout with the best exercise equipment. We recommend using a bluetooth chest strap heart rate monitor or a smartwatch for more training optimization & performance tracking.