04/25/2026
The fasted training debate has been running for years and the answer is genuinely more nuanced than either side typically presents.
The fasted training theory: by training before eating, your body is forced to use stored fat as fuel since blood glucose is low. Sounds logical.
The reality: while you may oxidize slightly more fat during a fasted session, total fat loss over time doesn't consistently favour fasted training in controlled studies. What fasted training does increase is muscle protein breakdown — your body also uses muscle as fuel when blood glucose is low.
Who fasted training works for: those doing low-to-moderate intensity cardio under 60 minutes, people who genuinely can't tolerate food before training without nausea, those with schedules that genuinely don't allow a pre-workout window.
Who should not train fasted: anyone doing strength training (performance and muscle preservation are both compromised), anyone with blood sugar sensitivity or management issues, anyone who consistently feels awful after fasted training — because consistent bad experiences lead to inconsistent training.
The practical compromise: a small, easily digestible protein source 20–30 minutes before training. A few bites of Greek yogurt, half a protein shake, a couple of eggs. This provides amino acids to protect muscle without sitting in your stomach during training
The most important factor isn't whether you eat before training. It's whether you train consistently. Whatever allows you to do that is correct.
Do you train fasted or fed? Does it work for you? Drop your experience below 👇
