Absolutely love them. However, they wreck my lungs and I cough for days afterwards so only use them very occasionally and sparingly.
The feeling is out of this world though...
Sophie
I was rather d*unk when I first tried them which is probably what you shouldn't do! However the feeling was pretty euphoric. Helped me relax during watersports as I had went shy. Only lasts a few minutes. I was fine the next day