Methods and systems of establishing a program to maximize weight loss include determining an energy deficiency and an exercise regimen for a particular female individual based on an increased concentration or level of at least one ovarian hormone, such as an oestrogen or progesterone. The apparatus further includes a sensor for measuring the relative distance between the housing and ground engaging member, and apparatus for selectively stopping the motor upon the distance between the ground engaging member and the housing exceeding a predetermined distance. A second pre-amplifier is coupled to the input of the buffer for driving the second device to draw current from the output. An actuator can shift the mount between a cutting position with the blades closely juxtaposed and the driven gear meshing with the drive gear and a retracted position with the blades separated and the driven gear out of mesh with the drive gear. The second beam can have a spectral range from about 200 nm to about 425 nm, and the third beam can have a spectral range from about 425 nm to about 850 nm.