Cannot Do Strenuous Exercise

“At 81 years of age I go to gym twice a week spending 12 minutes on a stationery bike and 12 minutes on a rowing machine – both at a gentle pace. I walk for 30 minutes each day before breakfast. I hope these are good exercises to avoid the need for knee and hip replacements which so many of my contemporaries are having. I have atrial fibrillation so cannot do any strenuous exercises, but am otherwise in good health. Are both these exercises appropriate and the best I could be doing – I am not a “natural” athlete!!”...

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