During any exercise class you may notice that your muscles start shaking. This means that your muscles are working near the limit of their capability and are getting tired. This is not necessarily a problem. As you become stronger, the shaking should subside or only start as you do more challenging exercises.
In the interim, it might be time to reduce the effort you are making, take a rest or change to another exercise working a different muscle group. In Pilates we keep the number of repetitions that we do low, so your shaking may stop as we move on to the next exercise.
If you find that your muscles are continually shaking it might be because you are dehydrated or you haven’t had enough time to recover from your last workout. Always ensure that you have enough to drink and give your muscles time to recover between workouts.