Imagine we're cosmic travelers, boldly going to exoplanets. Our bodies might need a cosmic makeover. Gravity on these new planets could make us feel as light as a feather or as heavy as a dumbbell. We might develop cool new leg muscles to strut our stuff on high-gravity worlds, or become bouncy kangaroo-like beings in lower gravity. Our skin might sport new shades to protect us from alien suns, and who knows, we might even grow extra fingers to play exotic instruments.

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