As per your complaint, it's very common to feel exhausted because you are a runner.
All rubbish that you lack vitamins, minerals and D3.
Next Steps
Have healthy diet.
Expose to sun before 7am .
Have plenty of water.
weekly once take 1 sachet of Electral powder.
Health Tips
Maintain Running regimen: Day 1: Run 1 km.
Day 3: Run 2km.
Gradually increase slowly then body will adapt.