Amy was right, physics did give up.

She woke up feeling... just great. Perfect even.

Light as a feather, she had even shrunk some.

Which ordinarily would be the opposite of good, but after a panic flex, she realized she still COULD be just as big as she had been.

(Well, bigger, she was still growing, obviously. And that really was obvious to her at this point.)

It was just she had gotten a lot of mobility back and could look tiny and cute again.

'Tiny' being 'only twenty inch arms' and 'cute' being 'girl abs you could grind meat on or crush cannon shells against'.

It was highly convenient!

Now she could do the REALLY hard exercises with her smallest muscle groups.

Now she could do a cartwheel again! ...Assuming a triple-reinforced floor anyway.

Now she could... hug her son without squishing him in a mountain of muscle.

Yeah really good all around.

A part of her had been afraid she was becoming a monster.

Now she was sure she wasn't!

Although, if not a monster, that left the question of what she WAS becoming, especially since one thing was clear.

'Human' definitely wasn't accurate.

Flexed Arms: 40 inches
Unflexed Arms: 20 inches again
Smugness: Not expressible without scientific notation