By Andrew Porter

PHILADELPHIA (CBS) — Some people question Ben Simmons’ desire to be great.

I don’t. I know better than that.

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Simmons, who turns 21 on July 20th, posted videos of himself working out on his Instagram story at 2:12 a.m. E.T. on Friday.

In the video Simmons said, “This things no joke man.”

Simmons, a 6’10” forward with point-guard like qualities, missed his entire rookie season last year after being the No. 1 overall pick due to a foot injury. He is fully recovered and is expected to play in the preseason.

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