Next, let's explore the issue of running on an empty stomach in the morning.
The Risks of Running on an Empty Stomach
Although many people know running on an empty stomach is inadvisable, most exercisers pay little attention to this. Health experts warn that running or exercising on an empty stomach can cause significant harm to the body.
Our normal physical activity requires energy to sustain it, and humans primarily obtain this energy from food. If you run on an empty stomach, the energy needed for exercise must come from burning fat.
This is one reason exercise is often recommended for weight loss.
Additionally, exercising on an empty stomach causes a significant increase in free fatty acids in the blood. Excessive free fatty acids can produce toxins that damage the heart muscle, often leading to irregular heart rhythms and even sudden cardiac death.
Morning hydration is beneficial, but avoid drinking before your run.
Drinking a glass of plain water upon waking each morning supports health. However, if you plan to run, wait 20 minutes after drinking before starting your workout. Long-term fasting before running may lead to side stitches and stomach ailments.
If you have a morning running routine, drink water 20 to 30 minutes beforehand, but avoid excessive amounts. Morning hydration helps alleviate overnight dehydration, regulates fluid concentration for balance, and facilitates the timely elimination of metabolic waste accumulated overnight. After finishing your run (and resting for 15 minutes), replenish fluids appropriately—moderate intake of saltwater is particularly beneficial for health.
Running immediately after meals or eating right after running reduces gastric acid secretion, impairing digestion and potentially causing stomach disorders over time. It's generally advisable to exercise one hour after eating. Running before bed is inadvisable, as it stimulates the cerebral cortex into a highly excited state, leading to vivid dreams or difficulty falling asleep.
However, intense exercise on an empty stomach in the morning is inadvisable. For longer fitness runs, consider drinking a small cup of sugar water or eating a light snack beforehand.