Originally Posted by FXjohn
I really doubt he needs a HR monitor anytime soon.
Sounds like the guy needs to recuperate and start walking, and maybe casually some light bike riding, and work his way up to a HR monitor "someday".
I agree with FXjohn. Generally a HRM is used for more sophisticated training. Get your brother walking (walk with him) on some easy trails. Build up his/your endurance level - go from 1 mile to 2 miles to 3 miles, then go at a faster pace, etc.
Do some gentle biking (bike with him). Start easy.
When you get to pushing the edge a bit is when you want the HRM.
Using a HRM now may get him to fixate on pulse rather than just getting out. Every once in a while, just stop and take a pulse to see how you/he is/are doing.
Have fun.