Creating fitness workout animations.

Character animator is for 2D animation, like cartoons. That particular video clip is 3D animation which you cannot do in character animator. Programs like Fuse, Blender, Maya, even Unity can be used to create that sort of thing, but it is a lot harder. So the first question is whether you want 2d or 3d animations, then look at products in that area. Have a look on youtube for character animator tutorials for example - just skim through a few. This will give a feel for the sort of animations possible in 2d. If you think 3d is needed, then character animator won't help sorry.