The advice here is very simple and straightforward, REST and take a break that is exactly what you need at that time, you must not gamble, even if you may want to claim it is for funnor entertainment, get a different form of entertainment until you feel better ut at this time, even your doctor will advise you stay off gambling completely.
Ot just gambling he must avoid any activities that will pressure him to think, there's nothing entertaining about gambling, he should go and listen to comedy Skips and movie, chill out with loves ones and share family stories it will help him to recover.
Playing gambling at this moment is dangerous, he doesn't need that pressure now, just as you said he needs Total rest and care to reduce his BP. Gambling will worsen it for real, not taking rest will still worsen it. Lastly he should visit his doctor and always check up and take his medications as prescribed.
The main focus in the process of recovery is reduction of cognitive and emotional stress in order to normalise the general physical state. I do agree immensely that the shift of the focus to light entertainment and human communication is one of the best supportive therapies. The reasoning given by medics is to follow the advice of the doctor and take medication regularly. Taking a break without the strain of gambling is a logical move to avoid osmotic blood pressure rise and be able to heal the best without causing harm to the outside influence.
