Rest days and sleep: the training beginners skip

A run is a stress. Your muscles, tendons, bones and heart respond to it during the hours and days after, by repairing and getting a little stronger. If the next hard session comes before that repair is done, you start from a lower point each time. Over weeks, that turns into fatigue, aches and injuries.

Muscles adapt quickly. Tendons and bones take longer. That is why beginners often feel ready to run more before their shins, Achilles tendons and feet are ready. Rest days protect the slower tissues.

Rest also keeps running enjoyable. Runners who never take a day off often slide into a grey, tired patch where every run feels like a chore. A day away usually brings back the wish to go out again. If you are building a habit, that matters as much as fitness.

Spread runs out. Two hard days in a row are harder to recover from than the same work with a rest day between.

Both work. A full rest day means no planned exercise. Active recovery means light movement that leaves you fresher, such as a 20 to 40 minute walk, an easy bike ride, a swim or gentle stretching. If you feel run down, choose full rest. If you feel stiff, a walk usually helps more than the couch.

The test for active recovery: you should finish feeling better than when you started. If it leaves you tired, count it as a training session and rest properly the next day.

Rest days handle day-to-day recovery. Over months, many runners also plan an easier week every three to five weeks. Cut your total distance by about a third, keep every run easy, and sleep a little more. You come out of it fresher and usually run better the week after.

An easy week is also the right moment to deal with small niggles before they become injuries. If something has ached on and off for a few weeks, rest it properly and see whether it clears.

Sleep matters most in the days before a big effort. One poor night before a long run is common and usually fine. A week of short nights before it is not. Bank sleep early in the week rather than counting on the night before.

Rest works best when your body has what it needs to repair. Eat a proper meal with carbohydrate and protein within a few hours of running, and do not skip meals on rest days. Your legs are still rebuilding. Drink to thirst through the day, more in hot weather. See what to eat after a run and how much water when running.

Many new runners also start running to lose weight and cut food hard at the same time. That combination makes recovery slow and raises the risk of injury. Keep any cut small, and protect the meal after your run.

• Making rest days into hard cross-training days. A tough spin class is training too.
• Putting the long run the day after a hard one. Leave an easy day or a rest day before it.
• Saving rest days for when you feel exhausted. Plan them in advance.
• Trading sleep for early runs. If you need a 5 a.m. alarm to run, move bedtime earlier too.
• Feeling guilty about a missed run. One missed day changes nothing. Trying to make it up the next day often does.

The CDC recommends seven or more hours a night for adults aged 18 to 60, seven to nine hours from 61 to 64, and seven to eight hours from 65. When you add running to a busy life, sleep is often the first thing squeezed. Protect it.

• Go to bed and get up at the same time every day, weekends included.
• Keep your bedroom quiet, dark and cool.
• Put screens away about half an hour before bed.
• Cut back on caffeine later in the day. Many people stop by early afternoon.
• Avoid heavy meals and alcohol right before bed.
• If you run in the evening, keep it easy and leave time to wind down before sleep.

• Tiredness that carries into the next day, or the next week.
• Easy runs feel hard, and your usual pace takes more effort.
• A morning resting heart rate a few beats higher than usual for several days.
• Trouble sleeping, irritability, or no wish to run.
• Soreness that does not ease with a day off, or small aches piling up.
• Catching colds more often than usual.

One sign on its own after a hard week is normal. Several together for more than a week means take two or three easy days, and cut next week’s running by a third. If tiredness persists after rest, see a doctor, since it can have other causes.

The challenge windows already allow for rest. Odin gives you 10 days for 6.2 miles (10 km), about 0.6 miles (1 km) a day, enough to take a few days off and still finish. Dragon is 111.2 miles (179 km) over 88 days. On a window that long, plan at least one rest day a week from the start rather than waiting until you feel worn out.

The app records your distance whenever you move, so walking on a recovery day still counts. It is a gentle way to stay on track without adding stress to tired legs.

• Is it bad to run every day? Not always, for experienced runners who keep most days easy. Beginners do better with rest days.
• Will I lose fitness on a rest day? No. A few days off do not undo weeks of training.
• Does a nap help? A short nap can make up for a poor night. Keep it under about half an hour so you still sleep at night.
• Should I rest when sore? Light movement is fine. Rest fully if the soreness is in one spot or getting worse.

• About Sleep (CDC)