Nick suffers from depression, in part caused by his vie of his nody image -- he was a bit of a chunky monkey as a kid, but who wasn't -- and they ised to go to the gym at least oce a day to try to get his body into a shape he could live with. Due to the coronavirys, they haven't been able to get to the gym so much, so I guess he's feeling insecure about hs body again, which is why they are probably concentrating on content with clothes on. Besides, with 7.6 million followers on TikTok, Nick is probably earning upwards of $100 for each post, which soon adds up if they both post several times a day.