Getting sick more often than usual is one of the clearer signs that training load has tipped from productive into excessive, but it rarely shows up alone. It tends to arrive alongside a cluster of other symptoms, persistent fatigue that doesn't lift with a normal night's sleep, a resting heart rate that's crept up, mood that's flatter or more irritable than usual, and performance in the gym that's stalled or gone backwards despite you training just as hard, if not harder. When several of these show up together, it's worth taking seriously rather than pushing through on willpower alone.

Sleep disruption is often one of the earliest and most telling signs. Overtraining can leave you wired and tired at the same time, tired enough to want sleep but unable to settle into it properly, which then compounds the problem because poor sleep is itself linked to weaker immune resilience. If this pattern sounds familiar, it's worth looking honestly at whether your training volume has crept up gradually without a matching increase in recovery.

Appetite changes are another marker people tend to miss. Some people lose interest in food when overreached, others find themselves constantly hungry but never quite satisfied. Either way, if your eating patterns have shifted noticeably alongside a rough training block, it's a sign your body might be under more strain than your training log alone would suggest.

Recurring minor illnesses, sniffles, sore throats and colds that seem to cycle through every few weeks rather than being occasional, are one of the more direct immune-related signs. This lines up with the research showing that heavy training load without enough recovery corresponds with a measurable dip in certain immune markers. It doesn't mean training caused the illness directly, but it does mean your body's defences are running with less capacity than usual.

If you're noticing several of these signs, the response isn't usually more supplements, it's less volume and more recovery. That said, supporting the basics helps while you dial things back. A Whey Protein Isolate or Complex Protein shake helps make sure recovery isn't being held back by inadequate protein intake, Magnesium Glycinate is often used to support relaxation and normal muscle function during high-stress training periods, and Deep Sleep can support winding down if your mind is racing at bedtime. None of these replace an actual deload.

If symptoms are persistent, severe, or you're genuinely worried about your health rather than just feeling run down, that's a reason to see a doctor rather than trying to train or supplement your way through it. Overtraining is reversible for almost everyone, but only if it's recognised and addressed rather than pushed through.