10/08/2026
Today in the clinic the topic is warming-up before exercise.
In the economics of exercise, there is the concept of oxygen debt and deficit, or EPOC (excess post-exercise oxygen consumption).
In essence, when you open the throttle at the beginning of exercise there isn't enough oxygen in the system to meet the demands of exercise - oxygen deficit. At the end of exercise there is an oxygen debt and a reconcilation period. Warming-up and cooling down helps to reduce and improve oxygen deficit-debt, and reduces the reconciliation period. In short, you recover from exercise faster.
As you warm-up, your heart rate also increases sending more blood to the muscles you are about to use. It is much better to gradually increase the stress and load on your heart than just "jumping into it."
Along with this, we know that warming-up literally increases your body temperature. This makes your tissues more pliable and stretchy. It also lights up your neural pathways, starting in the motor cortex of your brain right down to the muscles that are being activated. The motor cortex is the part of your brain that, in essence, has an imprint of your body stretched across it. It directly controls movement of specific body parts. The electrical activity in your brain increases with movement. Warming-up activates billions of neurons in your brain, causing a chain reaction of chemical activity at the synapses or junction points, which in turn sends action potentials - nerve impulses, along your nerves right down to your muscles - causing muscles to contract and relax. Warming-up speeds nerve conduction velocities to your muscles, making them more responsive.
Warming-up literally tells your body, "we're about to exercise" and calibrates your body for the activity you're about to do.
What is the Return on investment? Less stress to the body compared to a 0-100 approach. Improved performance. A better and more comfortable work out. Reduced risk for injury - so that you can keep exercising.
And what is the investment required for all these wonderful and amazing things?
Just 5-10 minutes before and after exercise. As a general rule, once you start to feel clammy or sweat, you're warmed-up.
Warm-up and cool-down.
Small investment. Big gain.
~ Joseph Federico PT
