What is high-intensity interval training (HIIT) and why is it so popular? Ep.36 𝗠𝗘𝗗𝗜𝗖𝗔𝗟 𝗗𝗜𝗦𝗖𝗟𝗔𝗜𝗠𝗘𝗥 This content is for informational and educational purposes only. It is not intended to provide medical advice or to take the place of such advice or treatment from a personal physician. All readers/viewers of this content are advised to consult their doctors or qualified health professionals regarding specific health questions. Neither Barbara O'Neill nor the publisher of this cont