Sorry. That's High Blood Pressure. He takes meds for that too. But those are great suggestions. If he knows exercise will help, it might get his rear out of his easy chair! Thanks!
I'm not sure what HP is, but type 2 diabetes is a tough one. He needs to control his blood sugar very carefully. Diabetes affects not only the vascular system, but the nerves too, so it's a double whammy.
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More exercise will help with circulation. He should walk as fast as possible every day for 45 minutes. I would normally recommend L-arginine to assist circulation, but I don't know if there is any contraindication for someone with diabetes. You might talk to guys at the diabetes forum to get their suggestions.