A heart beating faster making more electricity...? There were studies about using electricity to correct fibrillation in the heart, so the presence of electrical impulses was certainly clear... but he'd sure as hell never heard of the heart creating that much to matter.

"If a normal person generated electricity like that, they'd be dead." He grimaces. He guessed that was what they must have meant by 'meta' human.

Unfortunately, while Eiichi's classes had certainly covered plenty about cardiovascular health... That's also a bit ahead of his time. "'Beta-blocker'? No, I haven't. But if it's something you need to help your heart--" Something that they didn't seem to have on them, given their reaction?-- "we can try asking at a hospital. Even if I knew what they were, it's not like I'm a walking pharmacy."