I'm telling you, push-ups are harmful to human chest muscles.
upper limbs
shoulder
Abdominal muscles have a strong stimulating effect, which is definitely a good physical training program. Besides, I'm glad to see your attention to sports science. Give you a plan: divide the push-ups into four groups, each with an interval of 15 and each group with an interval of 1 minute. Slow down, slow down, and keep your muscles in a state of tension forever. If you can continue to do it after doing as I ask, please increase each group to 20 times, but don't be sad to increase the number of groups. It is suggested that when doing push-ups, try to put your hands in different positions on both sides of your body, and you will feel that your different unknown muscles are stressed and burning.
Your question doesn't elaborate on the current amount of exercise, so you can't clearly understand your current situation, but it's right to be tired after every push-up.
Exercise must be accurate, or don't do it, but judging from your phenomenon, you are really exhausted. Come on! You'll be successful!