 Simply stated, "Bodyfueling" advocates "eat more, exercise more" as a key to fitness rather than "eat less, exercise more", which Landis indicates is an unexamined platitude.From 1989 to 1999 she studied traditional herbal medicine with Karta Purkh Singh Khalsa.This led her to co-author a second book called "Herbal Defense" in 1997 with Khalsa, also published by Warner Books.