Good tool for measuring and analyzing stress response trends – Welltory: Heart Rate Monitor Review

Overall very satisfied. Some subjective explanations can be grossly inaccurate. Frequency Domain Analysis once read cortisol was high which was due to too much coffee, overeating and junk food. I drink very little coffee, maintain a caloric deficit of around 1000 calories per day and rarely eat any meal without fruits or vegetables. To my knowledge, cortisol levels cannot be conclusively gauged by HRV, nor can cortisol levels be used to accurately predict eating habits. This is just a small caveat that plagues health sciences in general - subjective interpretations of objective measurements. Become an advanced user. Ditch the words soup and compare the data to your lifestyle directly. This can potentially be a very powerful tool for gauging how habits and lifestyle changes affect your stress levels and, in turn, overall health and wellbeing.
Review by Korky Bulchik on Welltory: Heart Rate Monitor.