Just remember you have to do that actual practice. most people learn the knowledge and think they know it all without the actual experience.
I'm at a point where I can feel vibrations of energy moving and heat movement in a line flow like a flow of water through a small tube. it goes on and off more often now. I guess i'm advancing level and changes are being made to my body. the body go through many phases and progression depending on one's practice. to master the internal arts or chi healing one have to master letting go, relaxation of muscles and no thought. too much thinking will slow down progress. you also have to do some sort of muscle fitness exercise to strengthen the muscles, tendons and ligaments so that energy can be supported. silk reeling and rotations of joints helps. they have to be open and muscles relax for energy to move. that is one reason people can't do internal healing or any energy healing. they are not relax totally. they may feel they doing some healing but there are not. being sensitive to energy don't mean you are using chi to heal. the energy is real. you feel it like you feel water. it's concrete. not some warm feeling or body heat. you feel vibrations too. hot sensation is very refine and distinct as well as cold energy. it's not general heat. you can actually describe it for real not like other energy systems out there that describe it as tingling sensations or warm/hot temp. the heat people feel in reiki or other systems is the aura and 2 body fusing together, it don't mean energy work is being done like chi healing. those just help balance energy body but not refine skill of actual energy projection. Just letting you know that energy is concrete like water feeling not some iffy description most system give. when you get to advance level you'll know.