Medical Definition of ISOMETRIC. 1. : of, relating to, or characterized by equality of measure; especially: relating to or being a crystallographic system characterized by three equal axes at right angles. 2.
ALSO READ: Diet for Abs: Foods for Six Packs Abs. Muscle Building: Worst Foods for Abs #2. Commercial peanut butter: Peanut butter is one of the best foods you can consume if you want to build muscle, due to its high protein content. Peanut butter is also a great post workout snack.
How it builds muscle: More than just a piece of charbroiled protein, beef is also a major source of iron and zinc, two crucial muscle-building nutrients, says Incledon. Plus, it's the number-one food source of creatineâyour body's energy supply for pumping ironâ2 grams for every 16 ounces.