When you run, your body works hard like a little engine! 🚂 Your muscles move fast, and your heart beats quickly to give them energy. After running, your body needs to rest because it used up a lot of energy, just like when your toy car stops after playing too much!
Drinking water and resting helps your body feel better. 💧😊
Running makes your muscles work hard, and they need oxygen and energy to keep going. 🏃♂️ Your heart pumps faster to send oxygen-rich blood to your muscles. When you run, your body burns sugar (glucose) for energy, and it also makes a substance called lactic acid, which can make your muscles feel tired or sore.
Resting lets your body clear out lactic acid and refill its energy stores. 💪
Running is an intense physical activity that requires a lot of energy. Your muscles contract repeatedly, consuming adenosine triphosphate (ATP), the body’s energy currency. As ATP breaks down, it releases energy but also produces waste products like lactic acid, which builds up in muscles and causes fatigue.
Your cardiovascular and respiratory systems work harder to deliver oxygen and remove carbon dioxide. Over time, dehydration and glycogen depletion (stored glucose) also contribute to tiredness. Proper warm-ups, pacing, and recovery help delay fatigue.