There have always been card schools at football clubs and always will be.
I played for 30 years, 20 with England and I did it by setting goals.
When you talk about obesity, there's so many things that can cause that. It can be a medical thing, or down to the individual. There's a lot of other things involved than eating a Mars bar.
If you stand still there is only one way to go, and that's backwards.
Being fit will keep you mentally sharp and people forget that.
As a goalkeeper you need to be good at organising the people in front of you and motivating them. You need to see what's going on and react to the threats. Just like a good manager in business.