Brief Answer:
Some Ideas.

Detailed Answer:
Hello,

I'm sorry to hear about your recent difficulties. I must ask, are there any other symptoms involved? To get a full answer to the question you seek, a physical examination by a medical professional would be pertinent. However I can cite a few reasons for why this might be occurring. First and foremost I always consider cardiac conditions, even in healthy individuals; sometimes a genetic predisposition is enough to cause a cardiac event or atherosclerotic buildup. Other reasons for loss of vigor or energy can do with a virus or infection, and or alterations in your chemistry (i.e. hormones, such as testosterone). I would look into these possibilities and present to a physician who can perform a physician and assess such things.

I hope these ideas have helped you get a better idea on where to proceed.

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Brief Answer:
Yes

Detailed Answer:
Absolutely yes.

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