Questions: Health & Fitness

When I was 16 my height was 5'8''. I didn't get an inch from 16 to 17, maybe only half an inch. I was also very skinny and weak. I used to be that smart guy with a cute face who many girls dream about but I didn't date anyone because I was very insecure.

Then I decided to change myself. I bought a horizontal bar and started doing pull ups, leg ups and other exercises. I am now 20 and 5'11'' tall. Not only I became taller, I also became stronger. Despite becoming taller I don't look skinny now, I have a six pack and bigger arms. I became confident and now that I am smart, strong and not short I just laugh at those guys who thought they were superior to me. I continue working out and hope to get at least 1-2 inches taller and become even more jacked.

Now there are you — short, weak and fat guys and girls who complain about their lives and keep on telling how your body is not that important and that you can't radically change your weight and can't change your height at all. Maybe you should stop speaking bullshit and start working to improve yourself?

I'm debating whether to buy some or not, but I can't tell if this is a cruel internet inside joke or something (So, I feel like I can't trust google).

Can any of you vouch for it's effectiveness at whitening teeth or am I being fucked with here? I don't understand how brushing your teeth with black residue can whiten your teeth. It seems contradictory, doesn't it?