Rhodiola
Rhodiola rosea is a powerful adaptogen that supports stress and its hormonal response. Several studies have been conducted on Rhodiola in these "stressed out" or high demand populations, which are groups of people who experience pronounced fatigue that might impair work ability and quality of life.
Rhodiola in one study has been shown to reduce stress-related fatigue, improve cognitive functions and reduce mental fatigue in physicians during night duty, and relieve the symptoms of fatigue and burnout that are associated with long term stress.