I ditched the gym for this 25-minute dumbbell workout —here's what happened to my body

[admin]

Build full-body muscle with just a pair of weights

I ditched the gym for this 25-minute dumbbell workout —here's what happened to my body : Read more

 

[LessSugar]

I have a similar workout routine and what surprises most about it is how drastically it increases heart rate. In particular I have one exercise where instead of 12 reps, I slightly decrease the weight and increase the reps to 20, and try to get through the set as fast as possible. At the end of the set I am so out of breath that I need to take a short break before I can start the next set. What is it about the combination of moderately heavy weights and fast reps that gives such an intense cardio workout? Better than a run.