"He will do it right away" - Grappling legend Andre Galvao says flyweight MMA king Demetrious Johnson is a natural at BJJ

Grappling legend Andre Galvao praised Demetrious Johnson's natural affinity to Brazilian jiu-jitsu after watching him roll with the Ruotolo brothers this week. It's still shocking to see the level of physicality and aggression 'Mighty Mouse' brings onto the jiu-jitsu mats even after focusing so much of his career on mixed martial arts.

As we've seen over the past year, there's nothing that the ONE flyweight MMA world champion can't do. After achieving everything he could as a flyweight, the MMA legend has focused all of his energy on honing his jiu-jitsu and wrestling.

This week, the American BJJ black belt enjoyed learning new techniques from Andre Galvao's students, Kade and Tye Ruotolo, as he helped the former prepare for his MMA debut.

The Atos jiu-jitsu gym head coach, awed and inspired by the scene, praised Johnson on Instagram with the following comment below:

"Teach @mighty anything and he will do it right away."

On Friday, June 7, BJJ superstar Kade Ruotolo will make his long-awaited MMA debut on the world stage to face fellow American Blake Cooper in a lightweight bout at ONE 167.

Although we haven't seen much of what he can do when it comes to the striking arts, the ONE lightweight submission grappling world champion comes highly recommended, which adds more intrigue to his upcoming matchup with Cooper.

Johnson for his part, continues to wait for that phone call back into the MMA cage. For now, he stays devoted to expanding his knowledge in Brazilian jiu-jitsu.

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"I like to go swimming" - Demetrious Johnson prefers doing low-impact workout sessions to keep his body sharp in between fights

Besides sharpening his mind with BJJ, Demetrious Johnson also takes good care of his body.

One way to preserve healthy living is to set a morning routine that helps boost your cardiovascular fitness. Johnson swears that doing low-impact workout sessions, like swimming, helps with recovery as well as improves his overall mental health.

Since he's now 37 years old, taking care of his body and his mind is far more important than advancing his fighting career. Speaking to ONE, Johnson explained:

"I like to go swimming to get my morning cardio in. It gets the blood and oxygen moving through the body and muscles. I used to do five rounds of five minutes, but now I typically do three rounds because it's quite hard on your shoulders."