Giving advice to someone without upsetting them

[Snowflakes844]

I recently found and joined an amazing fitness website. Part of the premise of the website is to encourage friends to join so that you can compete and motivate each other. It occurred to me that i should ask one of my friends. Problem is, he is overweight, and i don't want him to get offended if i ask him to join. How can i ask my friend to join without pissing him off?

[annie24]

I would mention the website in passing and say how much you like using it, but I wouldn't tell him outright that he needed to sign up. if he's interested, he can ask you more questions or go to the site himself.