Some time ago this question was asked. Here is some research that suggests that certain exercise will help elevante HGH. I also believe that there has been hair regrowth cited in injected HGH subjects. Have NOT seen this reported in a study here HGH is elevanted by exercise.
McCall, G. E., Byrnes, W. C., Fleck, S. J., Dickinson, A., & Kraemer, W. J. (1999). Acute and chronic hormonal responses to resistance training designed to promote muscle hypertrophy. Canadian Journal of Applied Physiology, 24, 96-107.
Weight-trained college men (N = 11) trained three times per week for 12 weeks (an average of 32 sessions). High-volume free weights and exercise-machine resistances were employed.
Forearm flexor 1-RM strength improved by 25%. Hypertrophy in both classes of muscle fibers and overall muscle circumference was observed.
Resting hormone concentrations and the patterns of acute exercise hormonal elevations during the fourth and eighth weeks were not changed by 12 weeks of training. Decreased plasma volume accounted for elevations in testosterone, insulin-like growth factor-I, and sex hormone-binding globulin during exercise. Growth hormone and cortisol remained significantly high when corrected for plasma volume losses. Only the acute exercise-induced growth hormone elevations were correlated with the magnitude of fiber hypertrophy following training.
Implication. Growth hormone stimulated during resistance training influences muscle hypertrophy.