Rinse & rePeat
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- Joined
- Mar 10, 2021
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- 21,521
“A chronic increase of lactic acid and cortisol indicates that something is wrong. The “slender muscles” of endurance runners are signs of a catabolic state, that has been demonstrated even in the heart muscle. A slow heart beat very strongly suggests hypothyroidism. Hypothyroid people, who are likely to produce lactic acid even at rest, are especially susceptible to the harmful effects of “aerobic” exercise. The good effect some people feel from exercise is probably the result of raising the body temperature; a warm bath will do the same for people with low body temperature.” -Ray Peat