Hormesis

Box breathing is a paced breathing technique using equal-length phases of inhale, hold, exhale, and hold (commonly four seconds each). Slowing respiration well below the typical…

Cold exposure is the deliberate use of cold air, water, or ice (cold showers, ice baths, cryotherapy) as a hormetic stressor. Acute cold triggers noradrenaline release and…

Cold thermogenesis is the body's heat-producing response to cold, comprising shivering thermogenesis in skeletal muscle and non-shivering thermogenesis driven by UCP1-dependent…

The heat shock response is a conserved cellular program triggered by elevated temperature and other proteotoxic stressors. Heat shock factor 1 (HSF1) activates transcription of…

Hyperbaric oxygen therapy delivers 100% oxygen at pressures typically of 2.0–2.4 atmospheres absolute (with the clinical threshold for HBOT generally defined as at least 1.4 ATA)…

Hypoxia training exposes the body to reduced oxygen, either continuously (altitude, hypoxic tents) or intermittently (cycles of low and normal oxygen). Reported adaptations…

Ischemic preconditioning (IPC) is a hormetic phenomenon in which brief, sublethal cycles of tissue oxygen deprivation followed by reperfusion protect against a subsequent lethal…

Mitohormesis is the phenomenon by which transient, low-to-moderate increases in mitochondrially generated reactive oxygen species (ROS — superoxide, hydrogen peroxide, and…

Photobiomodulation, often called red light therapy, applies low-level red and near-infrared light to tissue; most clinical devices use ~600–900 nm, with some PBM literature…

Pulsed electromagnetic field therapy delivers low-frequency, low-intensity pulsed magnetic fields to tissue, typically via flat coil applicators at frequencies from 1 to several…

A Finnish sauna is a dry-heat bath, typically 80–100°C with low humidity, used as a passive heat-stress modality. Acute sessions raise core temperature and produce a…

Whole-body cryotherapy (WBC) exposes the body to extreme cold air, typically −100 to −140°C, for 2–4 minutes inside a nitrogen-vapour or electric cryo-chamber, in contrast to…

The Wim Hof method combines cyclic hyperventilation-style breathing, breath holds, and gradual cold exposure, popularised by Dutch athlete Wim Hof. Small studies report transient…

Xenohormesis is the hypothesis that animals benefit from stress-response molecules produced by stressed plants and microbes, sensing them as cues of environmental adversity.…