A different way of viewing weight loss identifies the problem as not one of consuming too many calories, but rather the way the body accumulates fat after consuming carbohydrates—in particular the role of the hormone insulin. When you eat a meal, carbohydrates from the food enter your bloodstream as glucose. In order to keep your blood sugar levels in check, your body always burns off this glucose before it burns off fat from a meal.
I'm busy with the program now and trust me, the 8 x 8 stiff leg deadlift on the one lower body day is more than suitable to hit the hamstrings and even more so, the lower back! Trust me it kills. The workouts are already hectic if you're following the program to a T! Including the cardio rounds after weights (with only 30 seconds rest). Doing deadlift in this 21 day challenge would be next level but by all means if you think you could smash it out, replace the dumbell stiff leg deadlift with normal deadlift on the one lower body day. Have fun, this is a killer routine!
Then, when you weigh yourself, do it at the same time every day so you eliminate variables. (I weigh myself as soon as I get out of bed.) While you won't lose weight every day, you should notice a downward trend, and if you don't, you need to adjust accordingly. Look back on what you've eaten and how you've exercised and determine where you've gone wrong.
Three sets of one or two more exercises and you'll be done with that muscle group for the day. Rest between all sets following the HIIT 100s exercise is limited to one minute to maximize fat burning. You'll follow the muscle group-specific weight training with one last dose of HIIT 100s using a full-body exercise such as barbell or dumbbell cleans; kettlebell swings; barbell or dumbbell deadlifts; barbell, dumbbell, or kettlebell snatches; or my own unique lift known as the dead/curl/press.
In a way, moderate-intensity physical activity is that "magic pill" a lot of people are looking for, because the health benefits go beyond keeping your waistline trim: Not only can it reduce your risk of cancer, stroke, diabetes and heart attacks, but studies have shown that physical activity can significantly improve the moods of patients with major depressive disorders.