I am an 18-year-old male, 176-177 cm,57-59 kg. According to AI, this 3:36/km pace is good, and I felt good about it. But this was my performance on a Monday morning. Today, Wednesday, I tried running, and it was an abomination. My leg feels heavy and slow. My breathing and all is fine. What happened to me? I was feeling good about being talented at least in something. Now I feel like a fraud.
-> I have not run more than 25-30 10k ever in my life. And I started running after getting inspired by a movie and to stay lean.
-> I don't know how, but when I was in peak condition as in no dead weight, I could only finish my 10k under 45-55 minutes (then i used to 54kg and maybe 10% BF).
-> I started running last November and stopped during my Class 12 boards.
-> I ran my last 10k about 5 months ago, and finished it in about 48 minutes while being on a perfect no-junk, no-oil diet. Weight around 56kg.
-> The last time I ran anything was 1.5 months ago, when I ran 4.8km.
-> I have been eating a lot of junk food lately and gained fat. Tbh, shouldn't my 10k speed decrease with this? Even the day before my pr, I ate 3 parathas (maida), beef roast, beef curry, rice, tapioca, two egg puffs, 2 some other oily snacks.
-> On Monday and Tuesday, I went back to my controlled diet, with less than 2000 calories.
What should I do? Can I increase my strength and at the same time be better at 10k?
Ps. I run all my 10k purely with nasal breathing, including my pr. What's the correct way to breathe?