How to Start Exercising From Zero

Quick Intro

Start by finding out what you can do now, then train a little above it. For most people a short walk is everyday activity and does little to challenge the body, so the first step is a few simple checks: how long you can keep up a brisk walk, how many times you can stand up from a chair, which push-up you can do and how long you can stand on one leg. Those results set your starting level. The first month then builds the habit from there, at a pace you can keep.

This article covers who should check with a doctor first, how to find your starting point, a simple first four weeks and what you can safely ignore.

Check This First

Most people can begin light to moderate exercise without seeing a doctor, as long as they build up gradually. Get medical advice before you start if you have a known heart, lung, kidney or metabolic condition such as diabetes, or if you get chest pain or discomfort, unusual breathlessness, dizziness or fainting with effort. The same applies if a doctor has told you to be careful. If any of those symptoms appear during the checks below or once you start training, stop and get checked.

Find Your Starting Point

Two people who both “do nothing” can be in very different places. One gets breathless on a flight of stairs, while another walks for an hour without noticing. A few checks, done on a day you feel rested, show where you are. Write the results down.

Stamina. Walk at a brisk pace where you can still talk in full sentences. Note how long you can keep it up before you want to slow down. If half an hour feels easy, try a hilly route or a few short spells of easy Jogging and note how those feel.
Legs. Sit on a sturdy chair with your arms folded. Count how many times you can stand up fully and sit back down with control in about 30 seconds, without using your hands.
Upper body. Find the hardest push-up you can do for about eight good repetitions: against a wall, against a table, on your knees or on the floor.
Trunk. Hold a Plank on your forearms, or a Knee Plank if that is too hard, and note how long you can keep your body in a straight line.
Balance. Stand on one leg next to a support and note how long you can hold it on each side.

Stop any check that causes pain. The point is to learn your level, so there is no need to push to exhaustion. Repeat the same checks every four to six weeks. How to tell you are getting fitter explains what the changes mean.

Why Start at Your Own Level

Training works when it asks a little more than the body is used to. Starting well below your level gives the body little reason to change, while starting far above it is how many beginners get hurt or give up.

Any amount helps. General guidance is clear that some activity is better than none, and the biggest health gains come from moving from nothing to something.
Comfortable effort keeps you going. Exercise above the point where breathing gets hard feels unpleasant for most people, while choosing your own comfortable pace feels better. Feeling good during a session is linked to doing more exercise later.
Fast starts often end early. When a popular beginner running plan was studied in the UK, only a minority of starters finished it, and injury and a plan that rose too quickly were among the reasons given. Building more slowly than a plan asks is a sensible choice.

A Simple First Four Weeks

Set each part from your checks. If a step feels too hard, repeat the previous week.

Stamina, on three to five days a week

If a brisk walk was hard to keep up for long: walking is your training. Walk briskly for about as long as you managed in the check, and add a few minutes each week.
If a brisk half hour was comfortable: walking alone will not ask much of you. Choose hilly routes, carry a light backpack or alternate brisk walking with short spells of easy jogging. Lengthen the harder spells a little each week.

Strength, on two days a week

For each movement, use the version from your checks that you can do for about 8 to 12 good repetitions:
- Squat: Chair Squat or Bodyweight Squat.
- Push: Wall Push-up, Incline Push-up, Knee Push-up or Push-up.
- Hips: Glute Bridge.
- Trunk: a plank held for a little less than your check time.
- Balance: standing on one leg near a support.
Week 1: one or two sets, stopping with a few repetitions still in reserve.
Week 2: two sets of each.
Week 3: add a repetition or two to each set, or a third set if it feels easy.
Week 4: when you can do about 15 good repetitions, move to the next harder version and drop back to fewer repetitions.

By the end of the month you have a routine that already covers much of what general guidance suggests for health, set at your own level.

What to Ignore for Now

Beginners are often told to worry about things that matter much later, or not at all:

The perfect plan. Any reasonable plan done consistently beats a perfect plan done for two weeks.
Soreness as a goal. Some soreness in the first weeks is normal, but it is not a sign of a good session. If you are so sore you cannot train again, you did too much.
Exact numbers. Heart rate zones, calories burned and macros can wait. The talk test is enough to judge effort.
Equipment. You need comfortable clothes and shoes. Everything else is optional at first.
Comparisons. Other people’s progress, especially online, tells you nothing about yours.

Making It Stick

A few things help the habit form:

Pick fixed times. “Walk after breakfast” or “strength on Monday and Thursday evening” is easier to keep than “when I have time”.
Make it easy to start. Lay out your shoes, keep a band by the door, plan the route.
Do it with someone if that helps. Company makes many people more likely to keep going.
Do not worry about missing a day. A missed session does not undo a habit. Just do the next one.

More on this is in staying consistent when motivation fades.

After the First Month

Once the routine feels normal, build up gradually: a little more walking, a third strength session or a few new exercises. Change one thing at a time and keep most sessions comfortable. How often should I exercise? and cardio or strength help with the next steps.

FAQ

How hard should my first sessions feel?

Moderate. Your breathing should quicken while you can still talk, and strength sets should finish with a few repetitions left in you.

What if the checks show I can do very little?

Then that is your starting point. A few chair stands and a short walk are real training when they are near your limit, and early progress at this level tends to be quick. Am I too old, too heavy or too unfit to start? covers this in more detail.

Should I do cardio or strength first?

Both, in small amounts. Walking builds stamina and short strength sessions build strength, and together they cover most of what health needs.

I missed a week. Do I start again from the beginning?

No. Pick up where you left off, or go back one week if it feels hard.