It’s easy to lose track of time and fall into mindless scrolling while on TikTok. The platform stores countless videos that cover a massive range of topics—even ones you’re not looking for (that’s arguably the best part of the app). Launched in China in 2016, TikTok currently has over 100 million active monthly users in the US alone, and has been downloaded over 2 billion times worldwide.

Somehow, the app knows which videos to place in front of users and the perfect time to push those videos forward. That insane algorithm has created one of the best spaces to start viral trends. But it’s not just the algorithms that make TikTok pop. The music, editing tools, filters, and variety of video effects also help users create short clips, up to 60 seconds long, that are addictively entertaining and shareable. We’ve all seen viral dances, pranks, skits, stories, and challenges make their way from TikTok to other media platforms; sometimes it’s hard to keep up with what’s what. But Complex has you covered. Here are some of the best TikTok trends and challenges to watch, right now.