Most debris on the ground is not hazardous to bare feet — Born to Live Barefoot

Debris and other discarded items often found on the ground or walkways are usually unlikely to do any harm to someone's bare feet.

Barefoot movement looks for toehold

Down to earth! Grounding or walking barefoot on earth has several physiological benefits - Lifestyle News

bare feet of a person on dry soil without plants close up - a Royalty Free Stock Photo from Photocase

Why barefoot is best for children, Health & wellbeing

How did early humans walk barefoot? - Quora

Being Barefoot – reconnecting with the earth and developing strong minds - Educated by Nature

Barefoot - Wikipedia

The power of earthing

Take Off Your Shoes and Walk - Kenneth Boggs

Barefoot on escalators is safer than shoes