I would agree the two major elements to my success in raising my GFR is diet and exercise. My diet is low in sodium, sugar, magnesium, potassium and phosphorus. That means focusing on foods that are high quality proteins such as vegetables, fruit, poultry and fish. I usually cook everything myself to control seasoning ingredients. Also, everything in moderation such as 1 banana per week (these are very high in potassium), nuts such as cashews (I eat raw), etc… I advise meeting with a renal dietician who can establish a diet regimen that fits your situation. Exercise is also important because blood flow through your kidneys is important to ensure proper profusion. I go the gym regularly and focus on the cardio circuit. Lastly, I meet with my nephrologist every 4 months with a blood draw every 8-12 weeks. I have improved my GFR by 10 points and been able maintain this for past 5 years. Hope this helps.