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.
Eat lean, mean protein. Aim to get between 10% and 35% of your daily calories from protein. Protein helps you to build muscle and gives you the lasting energy throughout the day. Some examples of healthy proteins include: Lean fish such as flounder, sole, cod, bass, perch, and halibut.