Tag Stress

A Definition of Physical Fitness

Bottom Line Up Front: Physical fitness is measured by how well you look, feel, and perform (as Robb Wolf loves to say). Your physical fitness will be influenced by four things: Nutrition, Sleep, Stress, and Activity. Note that I didn’t list…

Heart Rate Variability (HRV)

Bottom Line Up Front: Heart rate variability (HRV) will let you understand the impact of your training on the health of your system. The more your heart rate varies from beat to beat, the better your system is sitting. When your…