for me, it is a heavier body load at smaller doses, the more you do, or the better of a hit you get, will result in less weight, but in my opinion more of a weird feeling like i have lightning running through my body, and as if the dmt was moving my insides around, examining me, deciding what it should show me. i feel sometimes electricity flowing out of my mouth and eyes, and sometimes ill open my eyes and see lightning coming out of my mouth. dmt is a very strange feeling, especially at first, but the more you relax the easier it gets. really try to let go of your ego, and let go of your body, no matter how strange or terrified you are. the sooner you "release" yourself, or "surrender" yourself to the dmt the better the experience will be. just let it take you and show you the world. also, a little trick, if you see something really astonishing, if you can keep from getting to excited and restrain yourself, you will see something even more astonishing, when that happens you are being tested, hold your composer, tell it you want to learn.
before i light my bowl, I say "I want to learn from you, show me what you want, do to me what you will, I know i will be safe, I wont die no matter how beautiful you are."
and after i hit it, as it is kicking in, I say "hey there old friend, im ready for you"
and believe me, it will know if your not ready lol