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.
Related: The 25 Best Abs Exercises. Start your workout with 5 minutes of core moves that focus on stability like planks, side planks, mountain climbers, and pushups. Youâll be able to lift more iron, work more muscle, and burn more calories, he says.