When can I go barefoot?

Day fifteen. The first two weeks are socks-on so your nervous system can meet the sensation gradually. Barefoot too early is just pain — productive sensation needs nervous-system readiness, not toughness.

What does the first week feel like?

Intense, then surprisingly tolerable. Most people stand thirty seconds in socks on day one and feel every nail; by day five, three minutes feels normal. Step off immediately if you feel lightheaded or get a tingly numbness.

How do I care for the wood?

Wipe the board with a dry cloth after each session. Once a month, rub a thin layer of beeswax-and-linseed oil into the walnut and let it absorb overnight. Keep the board away from direct sun and away from radiators.

Who should not use a sadhu board?

Anyone pregnant or menstruating, or with a heart or circulatory condition, a clotting disorder, epilepsy, peripheral neuropathy, thrombophlebitis, open foot wounds, recent foot tattoos, or a fever. When in doubt, ask your doctor before starting.

Why 10mm nail spacing?

10mm is the universal sadhu-board spacing — wide enough to be felt, narrow enough to survive your first day. We ship 10mm so the same board works in your first week and in your fifteenth year.

Why a pair of boards instead of one?

Two boards let you stand with one foot on each — the traditional position. You can also work asymmetrically, hold one in your hand, or use them hinged. Every order ships as a pair.

How to use it

The first thirty days, in plain English.

A sadhu board is sharp metal arranged so that your weight is distributed across hundreds of contact points instead of one or two. The skin does not break under static load. The sensation does. The practice is learning to stay with sensation that does not actually harm you. Done well, it is one of the most direct tools I know for nervous-system regulation. Done badly, it is just pain.

Before you stand on the board at all

Read the contraindications list and take it seriously:

Do not use this board if you are pregnant, menstruating, have a heart or circulatory condition, a clotting disorder, epilepsy, peripheral neuropathy (especially diabetic), thrombophlebitis, open wounds on your feet, recent foot tattoos, or a fever. Keep the board away from children and pets, and always close or cover it when not in use.

If you are unsure whether something on that list applies to you, ask your doctor before starting. The traditional practice is thousands of years old; the contraindications are not folklore, they are the things modern practitioners have learned to be careful about.

Day one through day three: socks on

Put the board on a flat, non-slip surface — a rug or a yoga mat works. Put on a thick pair of cotton socks. Stand on the board for thirty seconds. Step off. Do this three times. That is the whole session.

You will feel the nails through the socks. That is the point. The sock is there so you can pay attention to the sensation without becoming overwhelmed by it. Almost everyone is overwhelmed by it on day one.

Day four through day fourteen: socks on, longer

Same setup. Increase the time on the board to one minute, then two, then three. If at any point you feel lightheaded, nauseous, or like your feet are going numb in a tingly way rather than a warm way, step off. Sit down. Drink water. You are done for the day.

Day fifteen through day thirty: socks off

Take the socks off. Stand on the board for thirty seconds. Same progression as the first week: thirty seconds, three times, with rest between. Then a minute. Then two.

The barefoot sensation is significantly more intense. People often start crying somewhere in the first sixty seconds of their first barefoot session. That is a normal nervous-system release, not an emergency.

The spacing legend

Counter to intuition: wider spacing is more advanced. Fewer nails carry the same body weight, so each nail pushes harder. The convention across the practice:

8mm — beginner. Most nails per square centimeter. Easiest first day.
10mm — universal. This is what we ship. Works on day one and on day three thousand.
12mm — intermediate. Regular practitioners.
15mm — advanced. Long-time practice; can cross over into pain rather than sensation.

Common mistakes

Standing on the board on a hard floor. The board needs a non-slip, slightly forgiving surface or it will slide.
Jumping on or off. Step on one foot at a time, slowly.
Holding your breath. The point is the opposite of bracing.
Going barefoot before day fifteen. You will not get more out of the practice; you will get less, because pain that overwhelms is not productive sensation.
Leaving the board out where a child, a guest, or a dog can step on it. Always close it or cover it.

More reading: why 10mm is the universal sadhu board spacing →

These statements have not been evaluated by the FDA. This product is not intended to diagnose, treat, cure, or prevent any disease.