Dr. M.Rajajeyakumar is an Assistant professor of Physiology at Chennai Medical College hospital and at research Centre (SRM Group) Trichy, Tamilnadu, India (Affiliated by Dr MGR Medical University, Chennai). He received MBBS degree from Tirunelveli Medical College and completed his MD Physiology, at Jawaharlal Institute of Postgraduate Medical Education & Research (JIPMER- An Institution of National Importance under the Ministry of Health & Family Welfare, Govt. of India). Then he worked as a senior resident (2009-2012) in the same department and research assistant in Advanced Centre for Yoga Therapy, Education & Research (ACYTER) Lab, JIPMER, collaboration with Morarji Desai National Institute of Yoga (MDNIY). He completed his MSc yoga at Annamalai University and completed ISAK (International Society for the Advancement of Kin anthropometry Level 1 & 2 in the year of 2010-11). He trained for recording & analysis of bio signals of CMC dag instrument for heart rate variability (HRV) in the Department of Bioengineering, Christian Medical College (CMC), and VELLORE- 2011. He completed the Basic Course on ECG Interpretation (2013) from Dr.Chenniappan’s ECG & ECHO Club of Trichy and Evidence Based Diabetes Management (CCEBDM), under Public Health Foundation of India (PHFI), which was recognized by the International Diabetic Federation (IDF) at Trichy diabetic centre 2013-14. His special research experience is in Yoga, autonomic, cognitive, cardio-respiratory, neurophysiology and medical education. He has published many papers (> 34) in reputed national & international journals. He is serving as an expert reviewer (>14) and editorial board member (>15) for many national and international journals. He is serving as one of the biomedical experts in the department of instrumentation and control engineering, National Institute of Technology (NIT), & biomedical department, Bharathidasan University, Trichy. He was an invited honorable guest speaker in the international conference on Weight Loss and Fitness-2015, Philadelphia, USA. Recently, His research paper was accepted for presentation in World Diabetes Congress Dec-2015, Vancouver, Canada, organized by the International Diabetes Federation.