Circuit training comes in many shapes and sizes. The instructor decides on a number of different strength and/or cardio based exercises which are performed at different stations one after the other. Usual circuit training sessions will allow for a short rest period in between stations and a longer rest period before the whole circuit is repeated. Daw hyfforddiant cylched mewn sawl siâp a maint. Mae'r hyfforddwr yn penderfynu ar nifer o wahanol gryfderau a/neu ymarferion cardio sy'n cael eu perfformio mewn gwahanol orsafoedd un ar ôl y llall. Bydd sesiynau hyfforddi cylched arferol yn caniatáu ar gyfer cyfnod gorffwys byr rhwng gorsafoedd a chyfnod gorffwys hirach cyn i'r gylched gyfan gael ei hailadrodd.