Stronger from stressors.

Hormesis ties in tightly with Antifragility.

List of Hormetic Stressors

Wiki

Hormesis is any process in a cell or organism that exhibits a biphasic response to exposure to increasing amounts of a substance or condition.[1] Within the hormetic zone, there is generally a favorable biological response to low exposures to toxins and other stressors. Hormesis comes from Greek hórmēsis “rapid motion, eagerness”, itself from ancient Greek hormáein “to set in motion, impel, urge on”. Hormetics is the term proposed for the study and science of hormesis.