What does it means to keep the core tight while exercising?

Just like the other answer stated, keep your abdominals and glutes tight when you exercise. However, some people do not know what this feels like. Imagine someone is about to punch you with all their might at your stomach. Tightening your core is like bracing for a punch that will never come (hopefully). read more

What it means to keep the core tight while exercising is basically you never stop flexing your core, which is just mainly your stomach. There’s really nothing else to it. read more

Note that this is an exaggeration of how you want to breathe during exercise. You want to breathe forcefully, but if you breathe too forcefully, you may become lightheaded after a few reps. This can be dangerous. Similarly, you want to keep your abs slightly more relaxed while exercising, so that your body can move more naturally. read more