The stomach is a muscular sac that is important for absorbing food and preparing food for further digestion.
Warm up exercises designed to prepare for the main exercises to follow. Warming up is essential because it helps release adrenaline, increases heart rate, increases production of synovial fluid, dilates capillaries, decreases viscosity of blood, activates enzymes, increases muscle metabolism, and alerts performers. Warming up varies with the type of activity to follow. Generally, warming up exercises are sets of limbering and stretching exercises to get the blood flowing and muscles warmed up.