Hummm I just downloaded it today.... I'm going to try it out and see.
I've been using it for only about 3 weeks, but I've been using it almost everyday.
They created a new feature called teams, only on the website for right now, I created a team there it looks pretty interesting, you should check it out. Team Perpetual Motion. It lets us create challenges and track our progress.
I've had it for months to improve my flexibility (I'm a gymmast.),and I love it. Especially the yoga. It helps me relax,or wake up in the mornings.