First you have to have routine check up your
LFT , RFT AND
LIPID PROFILE And ECG.
Included a balanced diet.
Depending upon your needs like weight loss or muscle built or fat loss. U need to start your gym excercise.
And a good diet according to the calories needed.
Next Steps
Where you need more protein according to the weight and calorie needs whey protein is good.
Creatinine I don't suggest.
Health Tips
Get a proper health check before starting anything new.