Signs you are overtraining, and what to do

What overtraining actually means

The word is used loosely for anything from a tired week to a genuine clinical syndrome. Three distinct states are worth separating, because they need different responses.

The important honest point: an exploratory systematic review of overtraining in resistance exercise concluded that no marker other than a sustained decrease in performance has been established as a reliable indicator. A scoping review of strength sports found minimal evidence that true overtraining syndrome has occurred in this population at all.

So if you lift three or four times a week and feel flat, the overwhelmingly likely explanation is accumulated fatigue, poor sleep, life stress, or under-eating — not overtraining syndrome.

The signals worth watching

Ranked by how much weight to put on them:

1. Performance trend over three to four weeks. The only marker with real support. Your logbook is the diagnostic instrument — see progressive overload.
2. Warm-up weights feeling consistently heavy. A good early proxy for the same thing.
3. Sleep quality deteriorating. Under-recovery tends to disturb sleep, which then compounds the problem.
4. Motivation collapse without a life explanation. Genuine loss of desire to train, not ordinary reluctance on a cold morning.
5. Elevated resting heart rate, five to ten beats above your own baseline, sustained across a week.
6. Persistent joint and tendon ache that does not settle between sessions.
7. Repeated minor illness. Suggestive, not diagnostic.

The usual real causes

In practice, what presents as "overtraining" in a lifter is nearly always one of these:

• Volume rose too fast. Jumping from ten to twenty sets per muscle per week rather than adding a couple of sets at a time.
• Every set taken to failure. Training to failure on every set multiplies fatigue for little extra stimulus — see reps in reserve and failure.
• No deload for months. See deloads.
• Under-eating, often unintentionally. Especially while adding training volume.
• Short sleep. The single largest recovery variable — see sleep and strength.
• Life stress at a peak. The same recovery budget pays for both — see stress and stalled progress.
• Hard conditioning stacked on top of hard lifting with no accounting for the combined load.

Each of those has a specific fix, which is why "overtraining" as a diagnosis is unhelpful. It names a symptom and hides the cause.

What to do about it

If performance has dipped for one or two weeks

Take a deload. One week at roughly half your usual sets, keeping the weights near normal but well short of failure. Most people come back stronger within a week. This is the intended solution to functional overreaching and it works.

If it has been down for three to six weeks

A deload plus an audit. Work through the causes above honestly — usually two or three of them are true simultaneously. Then rebuild volume from a lower starting point than you were at, and add to it slowly.

If it has been down for months

Take a genuine break: one to two weeks of no resistance training, or very light training only. You will lose almost nothing — detraining over two weeks is minimal — and it resolves what further tinkering will not. See when to take a full week off.

If there are symptoms beyond training

Persistent unexplained fatigue, weight change, mood change, disturbed cycles, frequent infection or resting heart rate changes that do not resolve deserve a doctor, not a programme tweak. Several medical conditions — thyroid disorders, anaemia, iron deficiency, low energy availability — present exactly like "overtraining" and none of them are fixed by a deload.

Preventing it in the first place

• Add volume in increments. One or two sets per muscle per week, then hold and see.
• Keep most sets one to three reps from failure. Save true failure for isolation work and the occasional top set.
• Schedule deloads rather than waiting for symptoms. Every six to ten weeks is a reasonable default.
• Log your sessions. You cannot see a trend you did not record. This is exactly what MyFitsy's session history is for.
• Reduce training when life load rises instead of adding willpower.
• Eat enough to support the training you are doing, particularly protein and total calories.

Common questions

Can I overtrain lifting three times a week?

Genuine overtraining syndrome, almost certainly not. Accumulated fatigue from taking everything to failure with no deload, absolutely yes.

How long does it take to recover?

Functional overreaching: about a week with a deload. Deeper accumulated fatigue: two to four weeks. Genuine overtraining syndrome, if it occurs, months.

Is soreness a sign of overtraining?

No. Soreness tracks novelty. See delayed onset muscle soreness.

Should I trust my watch's recovery score?

As one weak input among several. Heart rate variability is genuinely informative in aggregate over weeks and quite noisy day to day.

Will I lose muscle if I take a week off?

Essentially no. Two weeks costs very little and is easily regained.

Can under-eating look like overtraining?

Yes, and it frequently does. Low energy availability produces fatigue, poor performance, poor sleep and low motivation — and no amount of rest fixes it while intake stays low.

The practical version

• A sustained performance decline is the only well-supported marker. Everything else is soft.
• True overtraining syndrome is rare, perhaps absent, in strength training populations.
• What lifters usually have is accumulated fatigue from volume, failure training and no deloads.
• One to two weeks down: deload. Three to six weeks: deload plus an honest audit.
• Months down, or symptoms beyond training: see a doctor.
• Prevent it by adding volume slowly, staying short of failure, and scheduling deloads.