Do they work you mean?? Different variations of the position of your hands hits different muscle parts. Like doing push-ups with your hands far apart hits more of the chest area. Doing them with your hands close hits more of your triceps. I personally like them close.
They time how long each can hold it up above their heads for, then compare the times. The longest time has the most endurance.
<span>A mother's special speech to her baby, sometimes referred to as"parentese" may:
</span>b.help the infant become aware and hold his attention
