Fatigue (Night before, t = 3, t = 7) Handgrip strength and skeletal muscle fatigue will be assessed using handgrip dynamometry. Strength (maximal voluntary contraction) will determined from 3 maximal efforts, separated by 1 minute. Performance fatigue will be measured as the total number of successful 3 second contractions at 50% maximal voluntary contraction, with a 50% duty cycle, as described in a previous study of NAC effects on handgrip fatigue. To assess perceptual fatigue, the investigators will administer two questionnaires: the Brief Fatigue Inventory Score and Multidimensional Fatigue Symptom Inventory-Short Form (MFSI-SF). In addition, perceptual fatigue following the handgrip fatigue protocol will be assessed using a 0-10 scale (0 = no fatigue, 10 = worst fatigue imaginable).