target heart rate???

cooper902

So i have been using the polat ft4 heart rate monitor and love it. I let my husband use it cuase he was curiosu how many calories he burns on our walks. When he was done with it i reput all my stuff in it. Weight, height, age, and sex. Before my heart rate rance was 125-165 and now for some reason it is set to 107-145 which seems really low. Does anyone know what happend? or can help me in determing what my range should be. Right now im doing insanity so i wanna get my monitor going again to make sure my calories burned are what i actually am burning. thanks yall!!!!