You are doing all the work yourself in individual sports! If you are running the 100 meter dash, nobody is helping you run. It's all on you. Nobody will help you play 18 holes of golf, only you can. You need better physical endurance because you get no help with another person's endurance.
mental and emotional health is affected by weight
Okay well if none of them can get diabetes through genetics it would be the person with the worst eating and the one with a lack of physical activity witch would be Steve.