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  1. S

    Abdominal work ?

    I beg to differ, Mr. Brainum. I have seen direct abdominal work recommended in coaching manuals from the former Soviet Union (both track and field and Olympic lifting) and also from the East German sports machine. The problem with making such a generic statement is that there were thousands...
  2. S

    “Body By Science” workout concept

    No athletes train this way. Ever. You might ask yourself why you want to train like an athlete. Athletic training gives us the current 'best practices' for fitness training. McGuff et al vigorously defend their model, but a lot of it is based on Carpinellis's flawed meta-analyses of single set...
  3. S

    Why Cardio is just as important as Weight Training

    For those interested in prescriptions for specific adaptations to energy systems, I would recommend you check out Joel Jamison's materials, in particular, his MMA Conditioning book. Joel has cut through the nonsensical information the "intervals only" crowd of fitness gurus and discuses why...
  4. S

    Leg Cramping on bicycle rides over 40 miles

    Magnesium. And before your ride you might want to take 8-10g of taurine as well.
TRT Hormone Predictor Widget

TRT Hormone Predictor

Predict estradiol, DHT, and free testosterone levels based on total testosterone

⚠️ Medical Disclaimer

This tool provides predictions based on statistical models and should NOT replace professional medical advice. Always consult with your healthcare provider before making any changes to your TRT protocol.

ℹ️ Input Parameters

Normal range: 300-1000 ng/dL

Predicted Hormone Levels

Enter your total testosterone value to see predictions

Results will appear here after calculation

Understanding Your Hormones

Estradiol (E2)

A form of estrogen produced from testosterone. Important for bone health, mood, and libido. Too high can cause side effects; too low can affect well-being.

DHT

Dihydrotestosterone is a potent androgen derived from testosterone. Affects hair growth, prostate health, and masculinization effects.

Free Testosterone

The biologically active form of testosterone not bound to proteins. Directly available for cellular uptake and biological effects.

Scientific Reference

Lakshman KM, Kaplan B, Travison TG, Basaria S, Knapp PE, Singh AB, LaValley MP, Mazer NA, Bhasin S. The effects of injected testosterone dose and age on the conversion of testosterone to estradiol and dihydrotestosterone in young and older men. J Clin Endocrinol Metab. 2010 Aug;95(8):3955-64.

DOI: 10.1210/jc.2010-0102 | PMID: 20534765 | PMCID: PMC2913038

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