What are the causes if you exercise too much and can't get enough oxygen to your muscles?

Exercising too much can lead to a condition known as overtraining, where the body becomes fatigued and unable to efficiently deliver oxygen to muscles. This can occur due to inadequate recovery time, poor nutrition, or dehydration, which impair respiratory and circulatory functions. Additionally, intense exercise can increase the demand for oxygen beyond what the body can supply, resulting in muscle fatigue and decreased performance. Ultimately, this imbalance can impede muscle recovery and lead to decreased overall fitness.