like what info_o said, yoga makes the healing process faster and the “small wound” created by the tattoo (to get the ink to the dermis) will have healed a couple of hours after. The question would be more of the size and where it is located as yoga requires flexibility so you might want to wait 24 to 48 hours. I read somewhere, someone doing hot yoga had a tattoo and waited 3 days or until it wasn’t peeling anymore. Just put moisturizer in it. Hope this helps 🙂