my bish at the time used it. cycle as in period? couldnt tell you. her's were irregular enough, one every 3 months for 2 days, twice a month blah blah. they still are like that
if you start using it to long / too high of a dose it MAY mess dem joints up, but nothing crazy. i wouldnt let keep that from using it. if it gets bad, just get some MSM/glucosomine/chondoricite stuff for like $5 from walmart. i pop it like candy
she just followed the bottle directions and i trained her. um she had flat stomach w defined obliques and faint abs.