The Smile series of caches is designed to workout your brain, and your body.
Some of the puzzles are quite simple, and others may take a little time to resolve into final co-ordinates.
Enjoy!
After you crack the code, you will find the cache at:
XAZEC LTZPI VQOCI WENZV LKMTK ZFXZM FFMTK ZFVTR WFGXM FGBPW KACEL
GZMDI NQVEC LIWOI YDMPW XAZEC LIWAS AZBZR WEQIX QFEZQ AZCEI KQIDX
