LOL! Sounds like a Duffel Blog like take from the bath tub lobby. Dilation of blood vessels from heat is not quite the same as that from training.. After all, the heart IS a muscle. https://www.hopkinsmedicine.org/heart_vascular_institute/clinical_services/centers_excellence/womens_cardiovascular_health_center/patient_information/health_topics/exercise_heart.html Exercise has many positive effects on heart health. A regular exercise routine can help: •Lower blood pressure •Lessen risk of developing diabetes •Maintain healthy body weight •Reduce inflammation throughout the body