: Haven't done DEADMILLS in a long time. So I only did 12 sprints. –------------------------------- If you want a challenging #hiit workout instead of running for 30 plus minutes on a treadmill and being more efficient in burning fat give this a shot. -------------------------- DEADMILL sprints. Note: the treadmill is off during the durations of sprints so you are using your legs to drive the belt. Your quads will fill up of blood. --------------------- The workout: Warmup jog 5 minutes at a pace that will get you sweating and loose. Stretch out by doing some slow lunges. Now onto the treadmill. Using a timer on your phone or watch. Sprint 15 seconds, hop off and rest for 45 seconds. During the rest do 20 crunches. And rest the remaining time but right when rest is over you have to be ready to sprint right away. Do this for 12 sprints to start out. -------- People will wonder what you're doing. But I prefer short and intense cardio workouts over jogging forever. And you will be tested mentally. You'll want to cheat and rest more but that'll hurt your workout so avoid that as much as possible. ----- Your brain will quit before your body does.