The Who frontman Roger Daltrey is staggered by THE Rolling Stones' enduring energy because, although the two bands were contemporaries in the 1960s, Daltrey can't keep up with them.

The I CAN'T EXPLAIN rocker continues to swing his microphone in his inimitable way while performing, but admits he can't compete with bouncy Stones singer SIR Mick Jagger.

He says, "The Stones have kept that edge. Mick is just remarkable.

"The amount of energy he has is amazing. I don't know how he does all that bouncing around on stage."