Using questionnaire data collected from one gym in 1995, 2005, and 2015 this study examines 861 women’s and 1827 men’s training patterns and their motives for weight training. Between 1995 and 2015, the gym increased its membership, equipment, and machines. The analysis shows that the participants increased the time they trained in gyms and changed the muscle groups they prioritized. The motives to become stronger, healthier, and more fit remained stable over time, but both the men’s and women’s training de-emphasized building muscles and firmer shapes and emphasized fun, attractiveness, and endurance. The analysis suggests that how the socially constructed body should be shaped and the goal with the shaping has changed. In conclusion, the 20-year perspective captures changes that have not been reported previously and contributes to knowledge about the intersection of gyms and gender, shedding light on how gym culture has changed and the reasons for these changes.