A new job with physical work
Short answer: Wear a thin layer against the skin, keep several sets of underwear and socks, and expect to change midday in warm spells.
What the body is exposed to
Physical work means sweating for hours, often under workwear that does not breathe. The layer against the skin is therefore the most important choice, because it decides whether you are dry or clammy for the rest of the day.
The numbers you will need
In warm spells expect two sets of underwear and two pairs of socks per day. That means more pairs than in a desk job, meaning fifteen to twenty of each. See bamboo underwear for men.
The socks carry a lot
If you are on your feet all day, the sock decides how your feet feel in the evening. A sock with good moisture transport and no hard toe seam reduces rubbing. See bamboo socks for men and bamboo undershirts for men.
Frequently asked questions
Can bamboo fabric be worn under workwear
Yes, and that is exactly where it does the most good, because workwear rarely breathes.
How often should you change
Once a day, and twice in warm spells or with heavy work.
Should the underwear be close fitting
Yes. Moisture is moved best when the fabric touches the skin.