this is a big goal! stick to it dont slip up and take a break i say you aim for 10lbs at a time maby 10 in a month your best bet is arobic axercise jumpropeing, swimming, running and such if you have any Questions feal free to email me because i do lots of studying about this stuff, fitness is a big thing and hope to be a personal trainer E-mail l_a_04@hotmail.com