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The gym is infested with bad information. Lies that start with well-intentioned gym teachers trickle down to students who become coaches, trainers, or know-it-all gym-rat preachers. Lies morph into myths that endure because we don’t ask questions, for fear of looking stupid. The guy lifting beside you looks like he should write the book on muscle. Talks like it, too. He’s worked out since the seventh grade, he played football during his school days, and he’s big. But that doesn’t mean he knows what he’s talking about. Starting now, ignore him. Scientists, on the other hand, gladly look stupid—that’s why they’re so darn smart. Plus, they have cool human-performance laboratories where they can prove or disprove theories and myths. Here’s what top exercise scientists and expert trainers deploy for their coaching regime against the crap that’s passed around in gyms. Listen up and learn. Then go ahead, question it.
Slow Lifting Builds Huge Muscles
Lifting super slowly produces super long workouts—and that’s it. University of Alabama researchers recently studied two groups of lifters doing a 29-minute workout. One group performed exercises using a 5-second up phase and a 10-second down phase; the other a more traditional approach of 1 second up and 1 second down. The faster group burned 71 percent more calories and lifted 250 percent more weight than the super slow lifters.
The reality: “The best increases in strength are achieved by doing the up phase as rapidly as possible.” “Lower the weight more slowly and under control.” There’s greater potential for growth during the lowering phase, and when you lower with control, there’s less chance of injury.
More Protein Builds More Muscle
Up to a point, sure. But put down the shake for a sec. Protein promotes the muscle-building process, called protein synthesis, “but you don’t need exorbitant amounts to do this.” If you’re working out hard, consuming more than 0.9 to 1.25 grams of protein per pound of body weight is a waste. Excess protein breaks down into amino acids and nitrogen, which are either excreted or converted into carbohydrates and stored.
The reality: More important is when you consume protein, and that you have the right balance of carbohydrates with it. Have a postworkout shake of three parts carbohydrates and one part protein. Eat a meal several hours later, and then reverse that ratio in your snack after another few hours. “This will keep protein synthesis going by maintaining high amino acid concentrations in the blood.”
Squats Kill Your Knees
And cotton swabs are dangerous when you push them too far into your ears. It’s a matter of knowing what you’re doing. A recent study in Medicine & Science in Sports & Exercise found that “open-chain” exercises—those in which a single joint is activated, such as the leg extension—are potentially more dangerous than closed-chain moves—those that engage multiple joints, such as the squat and the leg press. The study found that leg extensions activate your quadriceps muscles slightly independently of each other, and just a 5-millisecond difference in activation causes uneven compression between the patella (kneecap) and thighbone.
The reality: “The knee joint is controlled by the quadriceps and the hamstrings. Balanced muscle activity keeps the patella in place and appears to be more easily attained in closed-chain exercises,” says Stensdotter. To squat safely, hold your back as upright as possible and lower your body until your thighs are parallel to the floor (or at least as far as you can go without discomfort in your knees). Try front squats if you find yourself leaning forward. Although it’s a more advanced move, the weight rests on the front of your shoulders, helping to keep your back upright.
Never Exercise a Sore Muscle
Before you skip that workout, determine how sore you really are. “If your muscle is sore to the touch or the soreness limits your range of motion, it’s best that you give the muscle at least another day of rest.” In less severe instances, an “active rest” involving light aerobic activity and stretching, and even light lifting, can help alleviate some of the soreness. “Light activity stimulates bloodflow through the muscles, which removes waste products to help in the repair process.”
The reality: If you’re not sore to the touch and you have your full range of motion, go to the gym. Start with 10 minutes of cycling, then exercise the achy muscle by performing no more than three sets of 10 to 15 repetitions using a weight that’s no heavier than 30 percent of your one-rep maximum.
Stretching Prevents Injuries
Maybe if you’re a figure skater. Researchers at the Centers for Disease Control and Prevention reviewed more than 350 studies and articles examining the relationship between stretching and injuries and concluded that stretching during a warm up has little effect on injury prevention. “Stretching increases flexibility, but most injuries occur within the normal range of motion.” “Stretching and warming up have just gone together for decades. It’s simply what’s done, and it hasn’t been approached through rigorous science.”
The reality: Warming up is what prevents injury, by slowly increasing your blood flow and giving your muscles a chance to prepare for the upcoming activity. To this end, a thorough warm up, as well as conditioning for your particular sport, is good. Of course, flexibility is a good thing. If you need to increase yours so it’s in the normal range (touching your toes without bending your knees, for instance), do your stretching when your muscles are already warm.
Use Swiss Balls, Not Benches
Don’t abandon your trusty bench for exercises like the chest press and shoulder press if your goal is strength and size. “The reason people are using the ball and getting gains is because they’re weak as kittens to begin with.” You have to reduce the weight in order to press on a Swiss ball, and this means you get less out of the exercise.
The reality: A Swiss ball is great for variety, but center your chest and shoulder routines on exercises that are performed on a stable surface. Then use the ball to work your abs.
Always Use Free Weights
Sometimes machines can build muscle better—for instance, when you need to isolate specific muscles after an injury, or when you’re too inexperienced to perform a free-weight exercise. If you can’t complete a pull up, you won’t build your back muscles. So do lat pull downs to develop strength in this range of motion.
The reality: “Initially, novice athletes will see benefits with either machines or free weights, but as you become more trained, free weights should make up the major portion of your training program.”
Free-weight exercises mimic athletic moves and generally activate more muscle mass. If you’re a seasoned lifter, free weights are your best tools to build strength or burn fat. Let me know your thoughts and experiences in the comments section. Chat with you below!