Slow-twitch muscle fibers are mostly used for long endurance exercises like aerobics, swimming, and distance running. Fast-twitch muscle fibers are generally more powerful and are activated during maximum exertion exercises like heavy weightlifting and intensive, short bursts of sprints.
Tags: more, powerful, swimming, long

Other Quotes by "David Kirsch"

A boot-camp class that combines upper- and lower-body moves - like walking lunges and push-ups - gets the heart rate up quickly, burning fat and calories and toning muscles in a time-efficient way.
Tags: way, walking, fat, heart
If someone is worried about bulking up their quads, they're not going to do a traditional squat. They're going to do a wide-stance squat or a plie squat, which is second position dance, opening up your legs and bringing the focus to the inner thighs and not to the quads.
Tags: someone, your, dance, focus
I had a client who was getting ready for the Oscars, and all she ate was one meal a day - of two boiled eggs! I was able to persuade her to add some almonds and a protein shake and some vitamin supplements. It's a self-defeating strategy. You need to eat enough, particularly protein, to build lean and toned muscle in the first place.
Tags: place, enough, day, you
If you do the treadmill or elliptical all the time, try adding the rowing machine or stair climber, maybe get a new bicycle. You want to keep it fresh.
Tags: new, bicycle, time, you
Working out is for both the mind and body, and being in a beautiful setting is conducive to a more pleasant experience. The more you enjoy your surroundings, the more likely you are to work out longer and harder.
Tags: experience, you, beautiful, work
View More by "David Kirsch"