Singh, P., Singh, S., Ghildiyal, A. and Verma, D.K. 2026. Comparison of respiratory fitness and happiness levels in morning and evening walkers. International Journal of Research in Medical Sciences. 14, 3 (Feb. 2026), 1114–1119. DOI:https://doi.org/10.18203/2320-6012.ijrms20260634.