Getting my Dexcom G4 soon .... any helpful tips?

Hi All, I live alone and have had a few fail to treat lows especially after exercise, so I am happy to be getting the new Dexcom. I’d appreciate any tips especially from active exercisers and yoga people on placement of the sensor, etc.

I don't have a Dexcom, I have a Medtronic CGM, and use this stuff Opsite Flexfix tape to hold it on securely. It's strong stuff. I've had some long, summer runs where I'd come home and drain the sweat/ blood/ interstitial fluid/etc. out by lancing the tape with a lancet.

http://www.americandiabeteswholesale.com/product/smith-nephew-opsite-flexifix-dressing_2107.htm?source=NexTag&zmam=69792428&zmas=1&zmac=4&zmap=W5466000041