Recently I discovered I can absorb qi and send it to anywhere on my body and (when the qi is sent) that portion in which is sent to has a vibrating
sensation and I can almost visually see it at times. I can also absorb qi or energy from water as well as heat myself in extreme cool by meditation.
I'm hoping to get stronger at controlling my qi as well as absorbing it. I'll keep practicing. Oh and if you feel light headed when absorbing energy
it's because you have to have energy to absorb energy and most likely you're completely drained or you've absorbed too much energy in which case you
need to expell it or burn that access energy.