OCR race, athlete overcoming a high raised log with a net

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What is the lactate threshold?

Chart showing the blood lactate evolution alongside exercise intensity and the lactate threshold level
When we exercise, chemical reactions happen to provide our body with the energy it needs to move. In the aerobic zone, the body naturally clears these byproducts at the same rate that they are generated, but in the anaerobic zone an accumulation of these byproducts in the bloodstream happens, including the lactic acid. The line between aerobic and anaerobic zones is called the lactate threshold.

What is Tempo Running?

OCR athlete running hard to the finish line tempo run
This technique involves running at a pace that pushes your boundaries but remains sustainable over an extended period. The key objective of tempo running is to prepare your body to perform at higher intensities without succumbing to fatigue.

What is VO2 Max?

Example of VO2Max scale
VO2 max, or maximal oxygen consumption, is a critical physiological parameter that measures the maximum amount of oxygen your body is able to utilize during intense exercise. It represents your body's capacity to transport and utilize oxygen to fuel your muscles when engaging in high-intensity physical activities.

Heart rate zones

Heart rate beat monitor
Heart rate zones are a percentage of a person’s maximum heart rate. They are important because they determine if some type of activity can be sustained for a short period of time or a long period of time.