A part of the condition is a tendency to be slightly overweight
However, the condition also makes the face appear rounder - giving the impression of being more overweight than they actually are.

Some people with mild Downs Syndrome do take pride in their appearance and join gyms/partake in excercise and, as a consequence are built like brick shit houses.

/works with people with learning disabilities
( Johnny Catfish - Yowsa!, Wed 6 Jul 2005, 16:43, archived)

True, that.
A mate of mine has a younger brother who is a quite a severe mong, and is RIDICULOUSLY strong. Even as a kid, he could push their dad around. He was like Blaster in Mad Max Beyond Thunderdome.
( Mr. Tea 'ulmmm'/'mmneurgh', Wed 6 Jul 2005, 16:49, archived)

They scare the shit out of their care workers
when they throw a tantrum, though.

HULK SMASH!
( Johnny Catfish - Yowsa!, Wed 6 Jul 2005, 16:55, archived)