What do you think is the most important aspect to keep retention high?

Final Answer: Overwhelm your clients with value – constantly!
1.) Sign them up to a great fitness newsletter
2.) Relate awesome 2-3 step healthy recipes they can make
3.) Text them assignments to do on the days you’re not training – they’ll do it! Which leads to the next point –
4.) Get HUGE results. Reiterating the last point, if they only train 2x a week with you, inspire them to do a 3rd day to augment your regimen by texting them instruction
5.) Make it FUN! If you’re not having fun, chances are, they aren’t either
6.) Give them positive feedback and be a master cheerleader. My best client is 64 w/major guns that I helped to build. I marvel at his results and make sure he knows it. That fuels his fire – and mine, too!!! 😀