Updated: 26 May 2020, by Marc Woodard How to monitor and sustain healthy body weight, appearance, physical performance and fitness levels like a pro, and without spending any money. Believe it or not, if you use a weight scale and monitor two bodily vitals; blood pressure and heart rate, these measurements provide a good indicator of oxygen utilization, fat burning capacity, metabolic efficiencies and overall health condition.  There is a direct correlation between these particular vitals, fitness levels, health and physical