Another hypothesis about orbs is that they are not the spirit at all, but rather energy being transferred to a spirit. Suppose that a spirit is hanging out near a power source, be that a person, a powerline, a warm fireplace, or something else.ut you still haven't explained how orbs have been seen on photos that have been taken without a flash, and orbs that have been seen without a camera at all. If you haven't got an explanation that's ok.
Feeling the Burn. When you start working out your legs, whether it's intense walking or using the leg press machine, your body starts converting glucose, or glycogen, into lactic acid inside your muscles. The muscle cells use lactic acid as fuel, as well as adenosine triphosphate.
1 Inadequate blood supply. Narrowing of the arteries that deliver blood to your legs (arteriosclerosis of the extremities) can produce cramp-like pain in your legs and feet while you're exercising. These cramps usually go away soon after you stop exercising.  Nerve compression.