5 Reasons why Brock Lesnar is retiring from the UFC

#4 Brock Lesnar does not want to go through drug tests again

Lesnar does not need the hassle

Brock Lesnar put himself through 6 months of drug testing by entering the USADA testing pool following July. In that time, it was easy to see that with his training, Lesnar was far thinner than he had been in a while.

UFC drug testing regulations are extremely strict. Athletes are often forced to wake up early in the morning due to surprise visits by testing personnel to provide samples. If there is one thing that Brock Lesnar is, he is laid back. He does not want to work so hard, because, as we specified earlier, he does not need any of it.

Also, there are often cases where MMA fighters accidentally contract positive drug tests due to the supplements that they take on a daily basis. Lesnar might want to avoid the hassle and uncertainty attached to this.