hi i would start by getting him out doing some brisk walking walking is a good way to exercise its good for many parts of the body and gets thinks working better as he loses weight he could take a back pack with say 10 lbs at first it will help his heart pump better. he also needs to cut out any fast or junk foods these have high salts and sugars drink lots of water lots of fruit are good as part of the 5 a day with veg. its a bit hard not knowing his age but if he can swim that's very good as well its an all over exercise but he needs to be in at least twice a week or more if he can. a good diet will help as well. good luck
my father is having a heart problem and hes over weight. which exercises would you suggest for him to lose weight?