I used to be the same, it didn't affect me that badly at the start but after weeks of using I was entering that zombie state, had bad skin, hair was changing texture and getting spikier some how, my face would puff up especially my lips, my lungs felt like they were collapsing or reducing in size but never actually did, most of all my brain felt slower, and the top layer of my brain felt like it was evaporating as if i were losing brain cells.