If you're used to lifting weights, your triceps work harder during shoulder presses when you use a barbell on a solid bench than when you use dumbbells on a wobbly ball — the more stable the setup, the more your main muscles have to engage.

Pressing a barbell in front of your head works your triceps more than doing it behind your neck, because of how your body has to balance and where the weight is pulling.

If you're a guy who lifts weights and do bench presses on a flat or slightly angled bench with a medium-heavy weight, your triceps are working just as hard no matter the angle — changing the bench tilt from flat to steeper doesn't really change how much your triceps help out.

The long part of the triceps doesn't work much when you push weights overhead because of how it's connected across two joints and how your shoulder moves.

If you're a guy who works out, doing push-ups on a decline with a stable surface fires up your triceps the most — more than using shaky suspension straps like TRX when your body is already at a steep angle.

When people who’ve never lifted weights before train their chest and arms with the same total muscle tension time, the back part of their triceps (near the elbow) grows more than the middle or shoulder-end parts.