Assuming you are referring to the workout program Solidcore, most classes are 50 minutes long and recommended 3-5 times per week for optimal results. However, depending on your fitness goals and schedule, you can modify how often you attend classes. For example, if you want to lose weight or improve your endurance, attending class more frequently (4-5 times per week) may be necessary. If you're trying to maintain your current level of fitness, coming 2-3 times a week should suffice.