I traveled to Roblox's headquarters to do a demo of a new safety feature it says will help protect child users.

The hardest part of working out consistently? Getting started. Once you do, though, you start feeling (and soon, seeing!) the positive impact on your mind and body. But with so many workout options ...

Kyasia Watson joined Roblox in 2009, when she was eight years old, drawn by a banner ad promising players could build their ...