India, June 20 -- Taking antihistamines before exercise may impact your fitness gains. Research suggests that antihistamines can blunt the beneficial effects of exercise by reducing muscle blood flow and limiting physiological processes like muscle perfusion. Here's what you need to know about the study published on May 30 in the Journal of Applied Physiology. Also read | Why your workout isn't working: 7 common gym mistakes and how to fix them

The molecule histamine - often linked to seasonal allergies like runny noses, scratchy throats, and itchy eyes - also influences exercise performance. The University of Oregon study underscores its beneficial role in aerobic activity and exercise recovery, showing that blocking histamine at high l...