Colin Farrell Hot & Sweaty ... For Yoga

12/1/2015 8:44 AM PST

Exhibit A for dudes to get into a yoga class -- Colin Farrell dripping sweat after getting his tree pose on ... probably some downward dog too. 

Colin air-dried on his way out of class Monday in West Hollywood. Yoga seems to be his workout of choice lately -- he's been spotted leaving classes all year.

We'd say he needs a towel, and maybe a shirt ... but why ruin a good thing?