Insights

2 of 5

Fitness

Excellent iron stores and metabolic efficiency support your endurance goals

Key numbers

Ferritin

348 µg/L

75-200 µg/L for endurance athletes

Strong iron reserves - well above the floor where athletes often struggle

Haemoglobin

148 g/L

135-175 g/L

Healthy oxygen-carrying capacity

Triglycerides

0.88 mmol/L

≤1.13 mmol/L

Low triglycerides indicate efficient fat metabolism

HDL cholesterol

1.86 mmol/L

≥1.0 mmol/L

High protective cholesterol - supports metabolic efficiency

Alex, you have a physiological engine built for endurance. Your and are robust, ensuring your muscles receive plenty of oxygen during sustained activity.

ferritin levels

Ferritin (Serum)

Optimal

348ug/L

30400

This is further complemented by your , which places you in the elite category for your age.

VO2 max

ml/kg/min

Having high iron stores is a significant advantage, as it prevents the aerobic ceiling often hit by athletes with lower reserves. Your metabolic data is equally impressive for long-term health. The very low and high suggest your body is highly efficient at using fat as a fuel source, which is a key trait for endurance performance. While you mentioned feeling low on energy, these markers show that your hardware for performance is in excellent shape. Your current resting heart rate of 54 bpm confirms this cardiovascular efficiency, suggesting that as you address recovery gaps, your potential for stamina gains is substantial.

What this means for you

Your iron stores give you a buffer that many endurance athletes lack - you're unlikely to hit the aerobic ceiling caused by low ferritin as training volume increases
The combination of low triglycerides and high HDL suggests your body is primed for fat oxidation, which is exactly what long-duration endurance efforts require
These metabolic markers mean your "hardware" is ready for more demanding training - addressing recovery could allow you to push harder without worrying about fuelling limitations