In our 'Will It Work?' series, Sports Science expert Hannah Reynolds investigates common fitness hacks, to determine if they're really any good for the time crunched athlete.
Bonk training, also known as fasted training, is a well-worn concept that cyclists have been employing for decades. Most riders are familiar with the lightheaded feelings of ‘bonking’ or blowing up and generally bonking is something to avoid as the consequences are an absolute loss of performance. Bonking occurs when your body has run out of its preferred fuel source, glucose, and becomes reliant on the much slower energy released from fat.
