Former Ravens linebacker Ray Lewis seems to have an easy time staying busy in his retirement days. He announced on his Facebook page on Thursday that he'll be starting a new adventure for charity: Tackling Mount Kilimanjaro and its 19,000-foot peak.

Lewis is also raffling off his autographed helmet to raise money for the climb.

It's just the latest in the numerous projects and appearances Lewis has made since hanging up his jersey after the Ravens' Super Bowl win. He's also signed a deal with ESPN to appear as a football analyst and has made it clear that he plans on attending his son, Ray Lewis III's, games at the University of Miami this year.

Rams coach Jeff Fisher, former Patriots linebacker Tedy Bruschi and MLB pitcher R.A. Dickey are among those who have made the climb in recent years. Martina Navratilova also attempted it but did not reach the summit.

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