Been noticing over the last few months my recovery time after I exercise has been getting longer and longer. I've noticed that when I cycle as I try to increase my distances and times I don't get better I just am at a "plateau". The next day after cycling when I try to swim I can barely finish 3 laps without being out of breath and my limbs feeling tired but after a two day rest I can swim at least 3/4 of a mile.. I am 70 years old and have 3 stents along with my PAF. I don't know whether this condition is from the meds(apixiban,carvedilol,clopidogrel,dofetilide, and pravachol) or the afib or combo of both. I'm really at a loss. Thought about going to a sports cardiologist for an opinion. As you can see I'm a pretty active guy. Any suggesrtions??