The instructor will be up at the front coaching you through your session. They'll take you through different speeds, resistance and interval training. The music will be loud but it's designed to get you focused and immersed into the exercise - switch off that brain and get stuck into your fitness.

Tic-tac-toe has been solved. The optimal first move is to go in the corner. As always, there 🎉 is a relevant xkcd.

The first player can't guarantee a win, and the second player can't guarantee a win either. This 🎉 is assuming both players make no mistakes in their moves. Therefore, neither going first nor going second guarantees a win 🎉 if both players are playing their best. Tic-Tac-Toe is a solved  game.