Adaptogens are most famous for resisting stress in the body and normalizing bodily functions that stress has messed up, like the adrenal system. They are going to adapt their healing properties to whatever your body specifically needs at a given time in order to restore you to peak functionality.
They have a normalizing effect on the body, they restore functions that have been altered due to stress.
Adaptogens also provide energy—not in short bursts like other energy-boosting ingredients, but a more sustained way. They trigger a longer release of energy throughout the day.
*A note on lifestyle*
Adaptogens are not replacements for a healthy lifestyle. Adequate and good quality sleep, a healthy diet, exercise, stress reduction techniques, and other healthy lifestyle choices are foundational. Taking adaptogens can help you function better if you have short-term situations when you are not getting enough sleep, or your diet is not what is should be. Using them long-term and continuing to live an unhealthy life just delays the inevitable crash.