Evening all, I'm 29 and have been running for 7 years, my target for this year is to beat my PBs in the half and the full marathon. My pb in the half is 1.20 and my pb in the full is 3.12. I did them 2 years ago and since then my training times have been getting slower (haven't done a marathon in 3 years). Now, I haven't been doing the same amount of mileage that I was doing when I did my PBs because of other commitments. I have also had sinus problems which I'm currently having treated. I don't feel lethargic when I run, it just seems harder to increase my speed - a mental thing maybe? Diet is quite strict - I have one cheat day a week and even then I very rarely eat takeaway food. I know there are runners on here who are very experienced and always willing to pass on good advice. I would greatly appreciate it, if I could be a beneficiary of such advice.