Jillian Michaels, the star trainer on "The Biggest Loser" TV series, has a series of workout videos that feature her boot camp style of motivation. "No More Trouble Zones" is a DVD that highlights classic exercises such as squats, triceps kickbacks and lunges with bicep curls. Cathe Friedrich is known for her challenging workouts using an ultra-high step and heavy weights. Her "Butts and Guts," "Muscle Max" and "Core Max" workout videos will challenge even advanced exercisers. Kathy Smith's "Lift Weights to Lose Weight Double" offers seven 26-minute workouts targeting every muscle using a Swiss ball and dumbbells. Master instructor Karen Voight's "Firm Arms and Abs" and "Lean Legs and Buns" are two separate 40-minute videos that will define your entire body. "Maximum Body Shaping" includes 46 minutes of classic dumbbell toning exercises and intense plyometrics to accelerate muscle fatigue.
Stand with medium-weight dumbbells held at your shoulders, elbows pointing forward, core tight. Keeping your core tight and your chest up, lunge backwards with your right knee, stepping backwards then lowering that knee until it touches the ground or until your left thigh is parallel with the ground. Pause, then drive back up and repeat the process on the other leg. Alternate legs until time expires. Do 3 sets.
That’s why I included the analysis of studies lasting 20+ weeks, to specifically look at studies where that sort of effect wouldn’t influence the results as much. That’s also why I separated upper body and lower body strength gains, as I’d expect this type of effect would be more prevalent for upper body strength than lower body strength. In support of the hypothesis that “untrained” women may be more untrained than “untrained” men – especially when it comes to upper body strength – women gained strength faster than men in shorter studies but not longer studies, and in measures of upper body strength but not lower body strength.
That's because women lose up to 5% of their lean muscle tissue per decade, starting in their 30s—and that number increases after 65. "I cannot stress enough how important muscle mass is to your life," says Perkins. "There is a direct correlation between your health and the amount of muscle mass that you have. The more you build, the faster your metabolism hums, the tighter and firmer you get, and the easier it is to lose weight and keep it off." It also decreases your risk for diabetes, stroke, heart disease, and makes you less likely to fall or become injured.
Mix-and-match interval training works magic in Natalie Jill's Rev4 Rev It Up. The four 10-minute routines hit different trouble zones so you can do them as stand-alones—"I definitely felt I got a good workout after each," one tester said—or combine them for a total-body session. Testers loved that they could "switch things up for time-pressed mornings" and gave props to instructor Jill's "nice energy." Expect a variety of planks and booty-shaping moves.
Start in pushup position, with your hands directly beneath your shoulders. Tighten your core and glutes and perform a pushup, lowering your torso to an inch from the ground. Press back to the start, and as you do this, remove your right arm from the ground and touch your right hand to your left shoulder. Pause for one second in this position tightening your core and trying to keep your hips level, then return to the starting pushup position. Repeat the process on the other side. This move will challenge you, but you’re continuing to build core stability. Alternate reps on each side for 3 sets. During Week 5, do the move for 40 seconds during each set, then rest for 20. During Week 6, work for 50 seconds, then rest for 10.
We're going to mix it up this week! Instead of Straight Sets, you're going to complete your workout in a circuit style. This week, you'll complete 1 set of each exercise for 15 reps, then you'll immediately move on to the next movement with no rest in between. For example, on the Day 1 workout, you'll perform your first set of leg presses for 15 reps, then you'll immediately go to the goblet squat and perform 15 reps and then continue on to the next exercise with no rest in between movements. At the end of these four movements, you'll rest for one minute, then complete the circuit two more times.