What components of fitness do planks use?

How much protein should a 210 pound weght lifter consume? Name an exercise you'd have a hard time doing 10 of? If you walk at a speed of 2mph how long would it take you to walk 2 miles? What are the average body composition for teens? IM 13 and iim skinny if i do 100 pushups a day 50 in the morning and 50 at night how long will it take me to get buff or ripped? Do more work on yourself when you run up the stairs than when you walk slowly true or false? Do old clothes shrink over time? Periodization refers to how a training program is broken down into discreet time periods called macrocycles mesocycles and microcycles? What is a good workout routine to bulk up? Is exercise therapy safe for people with heart conditions? Why do bodybuilders oil themselves? What is considered home equipment? How do you increase vein size? Do sketchers flex shoes stretch? What sentence segment contains a punctuation error On a bright crisp morning Kyle can be found lifting weights running laps and doing sit-ups.? What muscles does Pilates focus on? Health habits to make your body strong and healthy? Contraction of a muscle resulting in its shortening? What is the conclusion of topic cleanliness? How accurate are elliptical at the gym?

What components of fitness do planks use?