Day 17: 10k on 19th April

Seven and a half kilometres. One hour, six minutes, and fourteen seconds. At 8'48" per kilometre, this was not a tempo run or a speed session — it was a deliberate, controlled endurance effort designed to consolidate the aerobic work built over the past sixteen days without creating new fatigue that needs to be managed before race day. The average heart rate of 126 bpm confirms the effort stayed in the aerobic moderate zone, precisely where it needed to be.

There is a concept in endurance running called the 'taper' — the pre-race period where training volume drops and intensity is preserved, allowing the body to absorb all the fitness it has accumulated. Day 17 was my version of that: long enough to feel like a real training session, controlled enough to leave full energy in reserve for the 10k itself on April 19th. Running 7.51 km at this point in the block is a confidence-builder as much as a physical workout. It tells the legs: 'You can do this. You have been doing this.'

Compared to Day 13's 10.03 km milestone or Day 7's 7.34 km personal distance record at the time, today's 7.51 km sits comfortably in the 'strong' category. The pace is slightly more conservative than my fastest efforts, and that is by design. Race day energy must be preserved. The goal on April 19th is not to survive the 10k — it is to run it well. Days like today make that possible.

I went to bed at 12:45 AM. My watch had recommended 8:30 PM. The gap between those two times is not just a number — it is the creator's burden, and it showed in the morning. With only 5 hours and 37 minutes of actual sleep logged against a Sleep Score of 75 (Good), the body performed respectably — but 'respectable' is not the bar I want to clear two days before the race.

The Sleep Score of 75 (Good) is the same score I earned on Day 16 — consistent, but below where I need to be heading into the race. The sleep consistency metric remains at 0 out of 7 days on the recommended schedule, which is the honest, unfiltered reality of doing this publicly while also building the project around it. Going forward into April 18th and the race eve, the phone goes down early. No exceptions.

The one thing working in my favour: even on shorter nights, the body has been banking quality deep sleep. That physical repair block has been consistently Good or Excellent throughout the challenge. The cognitive edge of REM is what I am still chasing — and that comes from going to bed earlier, not sleeping longer once I do.

With a 1,950 calorie budget and 1,620 consumed — 83% of goal — today was a strategic undereat that aligns well with a pre-race taper philosophy. On a day where the run burned roughly 450–500 calories and body weight management going into race day matters, landing just under the calorie target is a sensible outcome rather than a failure to hit the number.

The day's nutritional architecture was built around three anchor points:

• Morning — Whey Protein Base: Starting the day with Asitis Whey Protein Concentrate sets a protein-first tone that carries through the rest of the meals. Post-run protein synthesis is at its most efficient in the recovery window, and the whey ensured those muscle repairs kicked off immediately.
• Mid-Day — Beetroot Parathas: This is Indian home cooking at its nutritional best. Beetroot is a natural source of dietary nitrates — the same compound found in beetroot juice supplements that elite runners pay premium prices for. Nitrates improve blood oxygen efficiency, which translates directly to running economy. I got mine baked into parathas. The carbohydrate content also makes this an excellent glycogen-loading meal heading into the final pre-race day.
• Dinner — Khichdi:The pre-race athlete's secret weapon, whether they know it or not. Khichdi — rice and lentils cooked together — is a complete protein source (combining the amino acid profiles of grains and legumes), easily digestible, and low in residue. It is exactly the kind of food you want in the system the night before a 10k. Easy on the gut, high in carbohydrates, and warming enough to aid the evening wind-down.

Protein at 76.3g is below the 97.5g goal — the gap is acknowledged. On a taper day with lower calorie intake overall, protein is the number I will prioritise tightening up on Day 18 (the last full day before race morning). The fibre from the beetroot parathas and khichdi keeps the digestive system running clean — critical for race day comfort.