I tink i've a high metablic rate for a 40 yr old. i'm a female. what is considered high for my age n is there any way to further increase? thanks!

Metabolic rate: I am not sure how one can estimate metabolic rate of his/her own body. There is no established measurement of such. Certain disease, like thyroid hyperfunction, increases metabolism and that manifests in weight loss, increased heart rate, skin/hair changes, endocrine changes - menstrual abnormalities, increased body temp, sweating, heat intolerance, fatigue, etc.