There are effects on whole body posture through the hips, lower back and into the neck.

Without changing your body posture - don't let your hips sag - place your left hand on the floor, then your right hand (b).

You should also listen to your audience, to pick up on non-verbal clues such as eye contact or body posture and be able to adapt your style in response.

But, actually, we knew, for his body posture screamed 'retreat!'.

All high-amplitude calls are delivered with from a taut body posture.