Beef up and Puff up

Beef up verb - To increase the ability of (as a muscle) to exert physical force.

Puff up and beef up are semantically related In some cases you can use "Puff up" instead a verb "Beef up".

Puff up verb - Make larger or distend.

Beef up and puff up are semantically related in extend topic. Sometimes you can use "Beef up" instead a verb "Puff up", if it concerns topics such as blow up.