Where the soreness usually comes from
During long mouse use, the forearm muscles and tendons that move your fingers and wrist work continuously. These make their load heavier:
- Gripping too hard: the fingers push all the time and the forearm never gets a break.
- A bent wrist: the wrist stays bent up, down or towards the little finger for long periods, and tendons slide back and forth around the bend.
- A hard edge: the wrist or forearm presses on the edge of the desk.
- Not moving: an hour or two in one position reduces circulation and stiffens the muscles.
- Sudden increases: practising half an hour a day, then three hours one day.
Desk and arm setup check
Most problems start to improve with setup. Check these in order:
| Check | Better | Avoid |
|---|---|---|
| Chair height | Feet flat on the floor, thighs roughly level | Feet dangling, or knees above hips |
| Desk height | Arms on the desk without raising your shoulders | A desk so high you shrug |
| Forearm | Most of the forearm supported on the desk or pad | Only the wrist resting on the desk edge |
| Wrist angle | Wrist roughly in line with the forearm | Long periods bent up or to one side |
| Monitor | Top edge around eye level or slightly lower | Looking down or up for long periods |
Grip pressure: the easiest and most effective change
Many players grip harder and harder in tense matches without noticing. The harder you grip, the more tired the forearm, the slower the hand and the shakier the crosshair. Relaxing your grip helps your aim as well as your health.
A simple method: before each round, squeeze the mouse as hard as you can for two seconds, then let go completely. Then hold it with just enough force to control it. Every so often during practice, check whether your fingers have clenched again. For grip advice, see Mouse grip styles.
A rhythm of breaks
- After every 20 to 30 minutes of focused practice, rest for a few minutes. Stand up, let go of the mouse and let your hand hang loosely.
- Between rounds, while respawning or loading, take your hand off the mouse and shake it out.
- Increase total practice time gradually. Do not double it in one day.
- Leave one or two days a week without dedicated aim practice.
For how long to practise each day, see How long to practise.
Warming up and winding down
When it is cold or you have just woken up, your hands are stiffer, and jumping into intense practice is more likely to feel uncomfortable. Wash your hands in warm water, then spend a few minutes on easy movements: slowly make a fist and open it, draw gentle circles with the wrist, stretch each finger in turn. Then start with easy aim drills and build up speed.
Afterwards, try gentle stretches: hold one arm straight out, palm facing away, and use the other hand to ease the fingers back for ten to fifteen seconds; then repeat with the palm facing you. Keep it gentle, a light stretch only, never to the point of pain.
For an aim warmup before games, see Warmup routine.
When to stop and see a doctor
Dealing with it early usually means a faster recovery. Do not worry about losing skill during a break; a short pause affects aim much less than most people expect.
Questions
Do wrist rests help?
For some people, yes: they lift the wrist and keep it off hard edges. But if a rest keeps your wrist bent upward for long periods, it can make things worse. When trying one, check that your wrist stays close to a straight line.
Would a vertical mouse be better?
A vertical mouse holds the forearm at a more natural angle, and some people use one to ease discomfort. But precision and feel in games differ a lot from a regular mouse. If you already have symptoms, ask a professional before deciding.
Can I alternate hands?
As a rest, yes, but control with your other hand is usually much weaker, so it is not useful as real aim practice.
This site's training plan sets a fixed amount of practice per day, which helps you avoid suddenly doing too much on one day.
View the training plan