Happy July 4th weekend. Happy 6th Year of Heart Doc VIP!   Can you judge your fitness and even your survival at home? This week, Dr. Kahn kicks off year 6 talking about the predictive power of pushups, squats, handgrip strength, treadmill time, and a one-leg stand for over 10 seconds. You will want to try all of these carefully at home and at work. This podcast is from the treadmill desk of the Kahn Center for Cardiac Longevity.   Welcome our sponsor xtend-life.com and their amazing product line including CX8. Use the discount code KAHN15 on your initial order of 2 or more bottles of CX8 for free DHL shipping and a free bottle of Marine Magnesium thrown in.