Acute increases in night-time plasma melatonin levels following a period of meditation.
Biological Psychology May 1, 2000 G. Tooley, S. Armstrong, Trevor R. Norman et al.
To determine whether a period of meditation could influence melatonin levels, two groups of meditators were tested in a repeated measures design for changes in plasma melatonin levels at midnight. Experienced meditators practising either TM-Sidhi or another internationally well known form of yoga showed significantly higher plasma melatonin levels in the period immediately following meditation...