The bouldering gym at the new Parkers Shinjuku sports centre has walls catering to climbers of varying levels of experience. The gym rents out shoes and chalk so you need only arrive in comfortable clothes to get to grips with the climbing area.
If you’re looking to do more besides climbing, Parkers Shinjuku also offers a spacious yoga studio with indoor and outdoor classes; the latter are held on the terrace overlooking the lush green grounds of Shinjuku Central Park. Prefer to take it outside? Sign up for guided sessions in jogging, Nordic walking and slacklining (walking on a tightrope suspended just off the ground).