With a Gold Sportkaart of 35 euros you can participate in a class 10 times. You choose yourself which classes you follow at which location. You can, among other things, choose from tai chi, dance, aqua aerobics, playful boxing, Qi gong, gymnastics, badminton,... Conditiegym In staying in motion is important. Gym is good for your blood circulation, your muscles and your joints and ensures that you remain flexible.