In general, attending classes twice or thrice per week for beginners is recommended; more experienced practitioners may want to stretch their sessions up to four times per week. This depends on whether you're looking to hone your skills or simply maintain them. If you prefer longer-term goals, then two or three classes will be sufficient for improvement over time. However, if you’re aiming for short-term gains such as toning specific muscles quickly, then consider taking more frequent classes with shorter rest periods in between each session.   Whatever choice works best for you, keep in mind that consistency is key when it comes to improving at pilates exercises. Don't forget to factor in other forms of physical activity into your weekly routine too so that all areas of fitness remain balanced!