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.
Slideshow: Foods to Boost Male Health. Lean Red Meat. If you're a steak-and-potatoes guy, you're in luck. Red meat can be good for you, says Leslie Bonci, MPH, RD, a dietitian for the Pittsburgh Steelers. Lean cuts of beef and pork are packed with protein and have only a little more fat than chicken breast.