hi, I just can t figure out my symptoms. Legs feel tired and painful at times especially behind the knee. muscle soreness but not all the time. Pain on one side of my neck. The thing that really is bothering me is the lack of endurance I have on my walks. I eat healthy, take my vitamins, get enough sleep. i was told that i have low blood pressure and i take eye drops to control glaucoma but that s it. always considered myself more than healthy