@fern the hoop has to be the height of your tummy button, it is advised that if you are a beginner you should not have one that is too heavy as it may cause bruising, I feel a wavy one would have the same problem. I have to admit I didn't loose anymore on my waist once I started doing it . But I didn't carry on twice a day 2x5 min through December when I got too busy. Also I was at that time maintaining and my waist was, is, less than 1/2 my height I did feel a bit firmer, in fact you have maybe convinced me to take said hoop out of spare room and have another go. 
Also I am a red wine drinker it's Friday night so I raise a glass to you. Hic. 
Also I am a red wine drinker it's Friday night so I raise a glass to you. Hic.
