The act of tightly wrapping leather strap around the arm on a daily basis appears to help blood flow and lower risks of a heart attack, according to University of Cincinnati study
Beyond Jewish Tradition: Wearing Tefillin can Keep Your Heart Healthy
Tefillin use induces remote ischemic preconditioning pathways in healthy men
heart attacks The Times of Israel
Tefillin Selfie for Tefillin Doctor
Jewish Times, Page 914 of 3094
What Are Tefillin?
A Religious Orthodox With Arm-tefillin On His Left Hand, 45% OFF
The Amidah Project: Laying Tefillin--Wearing Your Prayer on Your Sleeve (Video)
A Religious Orthodox With Arm-tefillin On His Left Hand, 45% OFF
The Origins of Tefillin