The Claim
Ten weeks of high-intensity interval training performed three times per week reduces self-reported stress scores by approximately 22% in healthy male adolescents aged 14–16 compared to a non-exercising control group, with no significant effect on depressive or anxiety symptoms.
What the research says
Supports is higher
Support is ahead, but a single strong opposing study can change this.
These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.
In healthy male teenagers aged 14 to 16, doing high-intensity interval training three times a week for ten weeks lowers self-reported stress levels by about 22% compared to those who do not exercise, but does not change levels of depression or anxiety.
See the scientific wording
Ten weeks of high-intensity interval training performed three times per week reduces self-reported stress scores by approximately 22% in healthy male adolescents aged 14–16, compared to no change in a non-exercising control group, but does not significantly affect depressive or anxiety symptoms.
Intense exercise sessions increase testosterone and decrease cortisol, which shifts the body’s chemical balance toward recovery and calm. This change, along with improved breathing and heart function, makes the brain less reactive to daily stress, so people feel less stressed without becoming less sad or anxious.
What the research says
1 studyTeen boys who did intense interval workouts three times a week for 10 weeks felt less stressed, but their sadness and worry didn’t change — just like the claim says.
Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies
Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.