The general answer is - NO. Bonk training is not a good idea... but then again, I may be misunderstanding your concept of bonking.
According to Friel, The diet references and training are based in periodization terms. Or as Friel put it, "In the Prep and Base period the diet should shift toward fat and away from carbohydrate. Protein remains fairly constant throughout the year. The purpose for this shift is to improve the body's propensity to burn fat for fuel while sparing glycogen." I don't believe he ever referenced specific training workouts that promote a water only training session (I could be wrong). And, I don't know of any training method that suggests this method to improve "fat burning".
The reason is probably because the recovery period for such a training method is more intensive than is gained through the process of forcing the body into glycogen depletion. In essence, more would be lost than gained from "bonking" regardless of it's intended purpose. Leaving recovery out the training equation is not a wise method. So, lets assume you train your body to "burn fat" more efficiently by "bonking".... chances are these kinds of stress will reduce the bodies ability to recover and result in net loss of fitness and not a gain.
FWIW Joe Moya
According to Friel, The diet references and training are based in periodization terms. Or as Friel put it, "In the Prep and Base period the diet should shift toward fat and away from carbohydrate. Protein remains fairly constant throughout the year. The purpose for this shift is to improve the body's propensity to burn fat for fuel while sparing glycogen." I don't believe he ever referenced specific training workouts that promote a water only training session (I could be wrong). And, I don't know of any training method that suggests this method to improve "fat burning".
The reason is probably because the recovery period for such a training method is more intensive than is gained through the process of forcing the body into glycogen depletion. In essence, more would be lost than gained from "bonking" regardless of it's intended purpose. Leaving recovery out the training equation is not a wise method. So, lets assume you train your body to "burn fat" more efficiently by "bonking".... chances are these kinds of stress will reduce the bodies ability to recover and result in net loss of fitness and not a gain.
FWIW Joe Moya