Nocturnal Cramps: Stuart Turner, Physiotherapist Norwest and Epping. Nocturnal leg cramps in adults are a common problem with some sources reporting that approximately 30% of adults over 60 experiences some form of nocturnal leg cramps. Nocturnal leg cramps usually affect the calf muscles and intrinsic foot muscles, and are characterized by strong involuntary contraction of … Continue reading Exercises to Reduce Night Cramps: Physiotherapy Norwest