President Obama was in Poland today where he gave a speech in front of a crowd of thousands in Warsaw. But earlier in the day, the Prez got busy in the hotel gym where someone was able to sneak a video of him working out -- unbeknownst to him or his Secret Service. In the clip, the president appears to be tired as he yawns, but keeps on with his workout which lasted around 30 minutes.

Check it out...

P.S. Most of us are lifting more than the leader of the free world.