Background - DH comes home from work and gets changed in the evening. Then when he goes to bed he puts his T shirt in the wash, he's normally had it on 3 hours or so and just been sat in it , no excersizing, no massively sweaty activities.
I have asked him previously if he could maybe wear them for a couple of evenings in a row as it just increases the laundry and tbh it's not really dirty.
His work clothes however get worn for two days or more in a row in what can be quite a manual busy job 