Several esteemed herbalists have provided us good descriptions of this herb, for example: Todd Caldecott on Ashwagandha: http://toddcaldecott.com/herbs/ashwagandha/ Michael Tierra on Ashwagandha: http://www.planetherbs.com/specific-herbs/ashwagandha-wonder-herb-of-india.html Alan Tillotson on Ashwagandha: http://oneearthherbs.squarespace.co...t-withania-somnifera-convolvulus-species.html
A study that found improvements to cardiorespiratory endurance in healthy adults on account of ashwangdha: Efficacy of Ashwagandha (Withania somnifera [L.] Dunal) in improving cardiorespiratory endurance in healthy athletic adults. https://www.ncbi.nlm.nih.gov/pubmed/26730141
