"What does being hypnotised feel like?" is a very common question. "Daydreaming", or "falling asleep" are common answers, but the feelings vary from person to person, and according to the depth of focus you are in:
In the very lightest state of focus (the Alpha brainwave state), it merely feels as though you are relaxing in a chair with your eyes closed, listening to some helpful suggestions with pleasant music playing in the background. Which, of course, is exactly what is happening! You are awake, aware and can move and speak completely normally, but you are physically a little more comfortable. Even in this lightest state, the suggestions presented to your subconscious mind will be more easily absorbed. Every one of us can achieve this light state virtually instantly.
As you realise that you are in control of your own depth of focus, you can more easily follow ideas to help you deepen the state. In the deeper Alpha and light Theta states of focus you might notice that you feel so relaxed that you can't be bothered to open your eyes or move - a bit like the feeling you have just before you go to sleep (which, again, is exactly what it is). Your arms, hands, legs and feet may feel pleasantly heavier - or you may have a nice, light, floaty feeling. You may have a sense of heightened awareness and a slightly distorted sense of time, when 45 minutes may feel like 10 minutes. Again, all these feelings are perfectly natural. It is estimated that 30% of us can deliberately get into this state without much help - and a higher percentage can be easily guided there.
You may find that you are able to reach even deeper states of hypnosis, which enable you to create feelings of numbness wherever you choose - before the development of anaesthetics, the only tools available to surgeons to help patients through operations were alcohol and/or hypnosis. It is estimated that another 30% of us can reach this state fairly easily (without the alcohol!).
