I started to notice symptoms about one month ago. The symptoms have included: constant exhaustion, heart racing with any exertion (such as lifting something or especially when walking up any incline), nausea, and stiff or sore muscles when doing any exertion (such as heavy legs when walking up an incline or doing stairs).
Hi your problem of exhaustion, heart racing and nausea and stiff or sore muscles on exertion may be due to over stress on your cardiac system. I would strongly recommend that you undergo complete cardiac check up and avoid any self-medication