If you’re only getting a minimal amount of sleep each night, that leaves more time for you to snack and make otherwise unhealthy decisions that could affect your weight loss. Although it will vary from person to person on how much sleep you actually need to be most effective (and therefore make progress toward your weight loss goals), the ideal number is typically 7 or 8 hours, says Dr. Cheskin. (Struggling to get that shut-eye? This doctor-approved breathing exercise will help you fall asleep fast.)
It's a one-time investment you'll never regret. Here's why: Strength training builds lean muscle tissue, which burns more calories — at work or at rest — 24 hours a day, seven days a week. The more lean muscle you have, the faster you'll slim down. How do you start strength training? Try some push-ups or a few squats or lunges. Use your free weights to perform simple bicep curls or tricep pulls right in your home or office. Do these exercises three to four times per week, and you'll soon see a rapid improvement.
For example, a 200-pound guy following this program would consume 200 grams of protein per day, and eat 2,000–2,200 calories—that’s approximately 420 calories (about 50 grams) from fat, and 880 calories (220 grams) from carbs. Your protein and fat intake will stay relatively constant, but your carbs can be raised or lowered as needed (see Step 5). So, if you’re taking your shirt off on Saturday, begin following this protocol the Saturday prior.
You should already be following a diet to get lean, and should therefore be aware of how much you’re eating. But to remove any guesswork, we’ll give you some numbers to hit for the week: Consume one gram of protein and 10–11 calories for every pound of your body weight; 20% of those daily calories should be from fat, and the remainder from carbs. (Remember to first subtract the protein calories you’re also eating from the total allowed before you calculate the number of carbs.)
Yes, there is rest built in—two days, to be exact—but not until you’ve put in seven straight days of pedal-to-the-metal work. Rest on days 8 and 13 to allow your body to temporarily recover from the grind of the program. This will help you bank more energy for the work days that follow. These rest days are mandatory. For those of you hitting the panic button, don’t fret—12 out of 14 days at these intensities will still be plenty adequate for getting your shred. Remember: your body changes while it recovers, not while you train. So, consider these two days your chance to bust into the gym a little more ripped on days 9 and 14.
For this HIIT 100s program, I've combined HIIT not only with weights but also with two very popular, intense, and effective weight-training techniques: German volume training (GVT) and Hundreds training. With GVT, aka 10x10, you do 10 sets of 10 reps on a given exercise. Hundreds, as the name implies, involves doing 100-rep sets. With Hundreds, you'll do 10 sets of 10 reps for one exercise per muscle group. Sounds the same as GVT, right? Not exactly.
"When we’re lacking in sleep, our body’s hormones get thrown off balance which can impact our hunger levels the next day. We all have two hormones that affect our appetite: ghrelin and leptin. When we don’t get enough sleep, our ghrelin levels (the hormone that makes us feel hungry) rise, and our leptin levels (the hormone that makes us feel full) drop. This means that when we’re awake, we tend to eat more but feel less satisfied. Try going to bed a little earlier than usual to avoid this imbalance and remember to remove any distractions that might prevent you from nodding off."