sorry to read this Don, wishing you a speedy recovery
just never know when these kind of things may strike, couple years ago i went out chasing the northern lights, parked my car on the side of the highway and walked out onto a frozen lake, had to get through a deep ditch which was full of snow from the plow trucks driving by, never thought nothing of it as i was going downhill to the lake, i'd sink to my knees, no problem...but coming back, i was busting my arse trying to get back up that hill and with each step i was sinking in the snow almost to my waste, it was a killer, was almost to the point where i was just going to try laying down and roll myself up the hill but i trudged on, by the time i got back to the car i was soaked in sweat, breathing like i ran a marathon and my heart was beating 200mph but i made it, the following friday, sitting at home i had a heart attack