If gym classes aren't your thing then get outside and join a kettlebell workout in the fresh air! Group sessions are a maximum of 12 people. The trainers are enthusiastic and motivate you to the max, so you get the most out our your training session. There are many different kettlebells to choose from so it's suitable for everyone! Join Kettlebell Outdoor if you want to get fitter and stronger while having fun outside.
Note: There are no lockers or showers available, but there is a place to put your belongings, you won't leave the area so you can always keep an eye on your things. Make sure you wear clothes that you don't mind getting a bit dirty, if it rains - the training will go on!
Westerpark meeting point:
https://goo.gl/maps/FK6qLhvbahrkXRZG9 (copy text and paste in browser)
And get access to 407 gyms and studios in Amsterdam with one sports membership.