Live in New York and flew to San Diego. Back to New York three days later and my watch says I'm 2952 ft acclimated. One week later... no changes in altitude acclimation and also 1% maintained heat acclimation. True I got out for a run in La Jolla and it was warm but after a week training again in New York winter this seems a bit ridiculous. I always thought these features were fake features...