Body Mass Index

Tags: bmi health

BMI, developed in the 1800s to track obesity trends, is useful for epidemiology as it averages out individual variations. However, it’s crude at the individual level, as it doesn’t distinguish between muscle and fat, bone density, age, fitness level, or health markers. It’s solely based on height and weight. For what it’s worth, here I log my values.

Pre-portion. Steady state. Not perfect. Just consistent.

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WEIGHT ANALYSIS: LAST 12 MONTHS
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Total entries: 40
Date range: 2025-10-27 to 2026-10-23
Days tracked: 361

Weight:
  Current:  73.0 kg / 160.9 lbs
  Highest:  80.0 kg / 176.4 lbs
  Lowest:   73.0 kg / 160.9 lbs
  Mean:     75.7 kg / 167.0 lbs
  Std Dev:  1.98 kg / 4.37 lbs

Trend (least-squares fit):
  Start → End: 75.5 → 73.0 kg
  Change: -2.5 kg (-3.3%)
  Slope: -0.102 kg/week
         -0.44 kg/month
         -5.3 kg/year

2026-10-09: m = 74.0 kg, ∆m = 2.0 kg, BMI = 25.0 → overweight.
2026-10-07: m = 75.0 kg, ∆m = 3.0 kg, BMI = 25.4 → overweight.
2026-10-07 - 2026-09-19: Hokkaido Trip.
2026-09-18: m = 73.5 kg, ∆m = 1.5 kg, BMI = 24.8 → normal.
2026-09-15: m = 73.5 kg, ∆m = 1.5 kg, BMI = 24.8 → normal.
2026-09-09: m = 73.5 kg, ∆m = 1.5 kg, BMI = 24.8 → normal.
2026-09-03: m = 74.0 kg, ∆m = 2.0 kg, BMI = 25.0 → overweight.
2026-08-27: m = 74.5 kg, ∆m = 2.5 kg, BMI = 25.2 → overweight.
2026-08-22: m = 75.5 kg, ∆m = 3.5 kg, BMI = 25.5 → overweight.
2026-08-14: m = 74.5 kg, ∆m = 2.5 kg, BMI = 25.2 → overweight.
2026-08-12: m = 74.5 kg, ∆m = 2.5 kg, BMI = 25.2 → overweight.
2026-08-04: m = 75.0 kg, ∆m = 3.0 kg, BMI = 25.4 → overweight.
2026-08-01: m = 75.5 kg, ∆m = 3.5 kg, BMI = 25.5 → overweight.
2026-07-29: m = 76.5 kg, ∆m = 4.5 kg, BMI = 25.9 → overweight.
2026-07-27: m = 77.0 kg, ∆m = 5.0 kg, BMI = 26.0 → overweight.
2026-07-14: m = 76.0 kg, ∆m = 4.0 kg, BMI = 25.7 → overweight.
2026-07-09: m = 76.0 kg, ∆m = 4.0 kg, BMI = 25.7 → overweight.
2026-07-05: m = 76.0 kg, ∆m = 4.0 kg, BMI = 25.7 → overweight.
2026-06-29: Started taking cold showers at the end of the shower.
2026-06-26: No grand plan. Pre-portion. Steady state. Not perfect. Just consistent.
2026-06-25: m = 76.5 kg, ∆m = 4.5 kg, BMI = 25.9 → overweight.
2026-06-21: Started daily HICT exercise.

Click to expand changelog.

2025-05-31: m = 77.0 kg, ∆m = 5.0 kg, BMI = 26.0 → overweight.
2025-05-07: m = 76.5 kg, ∆m = 4.5 kg, BMI = 25.9 → overweight.
2025-04-18: m = 77.0 kg, ∆m = 5.0 kg, BMI = 26.0 → overweight.
2025-04-17: m = 76.5 kg, ∆m = 4.5 kg, BMI = 25.9 → overweight.
2025-04-12: m = 76.5 kg, ∆m = 4.5 kg, BMI = 25.9 → overweight.
2025-04-01: m = 78.5 kg, ∆m = 6.5 kg, BMI = 26.5 → overweight.
2025-03-22: m = 77.5 kg, ∆m = 5.5 kg, BMI = 26.1 → overweight.
2025-03-21: m = 78.0 kg, ∆m = 6.0 kg, BMI = 26.4 → overweight.
2025-03-15: m = 79.0 kg, ∆m = 7.0 kg, BMI = 26.7 → overweight.
2025-03-08: m = 78.5 kg, ∆m = 6.5 kg, BMI = 26.5 → overweight.
2025-03-01: m = 78.5 kg, ∆m = 6.5 kg, BMI = 26.5 → overweight.
2025-03-01: Started slow-carb diet.
2024-11-18: m = 77.5 kg, ∆m = 5.5 kg, BMI=26.1 → overweight.
2024-10-26: m = 75.5 kg, ∆m = 3.5 kg, BMI = 25.5 → overweight.
2024-10-24: m = 76.5 kg, ∆m = 4.5 kg, BMI = 25.9 → overweight.
2024-10-03: m = 76.5 kg, ∆m = 4.5 kg, BMI = 25.9 → overweight.
2024-09-26: Started daily HICT exercise.
2024-07-19: m = 73.5 kg, ∆m = 1.5 kg, BMI = 24.8 → normal.
2024-07-11: m = 73.0 kg, ∆m = 1.0 kg, BMI = 24.7 → normal.
2024-06-17 :: 2024-07-08: Travelling in Japan, no slow-carb diet.
2024-06-15: m = 73.0 kg, ∆m = 1.0 kg, BMI = 24.7 → normal.
2024-05-31: m = 73.0 kg, ∆m = 1.0 kg, BMI = 24.7 → normal.
2024-05-29: m = 73.0 kg, ∆m = 1.0 kg, BMI = 24.7 → normal.
2024-05-28: m = 73.0 kg, ∆m = 1.0 kg, BMI = 24.7 → normal.
2024-05-23: m = 73.5 kg, ∆m = 1.5 kg, BMI = 24.8 → normal.
2024-05-17: m = 73.5 kg, ∆m = 1.5 kg, BMI = 24.8 → normal.
2024-05-11: m = 74.0 kg, ∆m = 2.0 kg, BMI = 25.0 → overweight.
2024-05-07: m = 74.0 kg, ∆m = 2.0 kg, BMI = 25.0 → overweight.
2024-05-04: m = 73.0 kg, ∆m = 1.0 kg, BMI = 24.7 → normal.
2024-04-27: m = 73.0 kg, ∆m = 1.0 kg, BMI = 24.7 → normal.
2024-04-20: m = 73.0 kg, ∆m = 1.0 kg, BMI = 24.7 → normal.
2024-04-18: m = 73.5 kg, ∆m = 1.5 kg, BMI = 24.8 → normal.
2024-04-13: m = 73.5 kg, ∆m = 1.5 kg, BMI = 24.8 → normal.
2024-04-06: m = 73.5 kg, ∆m = 1.5 kg, BMI = 24.8 → normal.
2024-03-28: m = 74.0 kg, ∆m = 2.0 kg, BMI = 25.0 → overweight.
2024-03-23: m = 74.5 kg, ∆m = 2.5 kg, BMI = 25.2 → overweight.
2024-03-16: m = 74.5 kg, ∆m = 2.5 kg, BMI = 25.2 → overweight.
2024-03-15: m = 75.0 kg, ∆m = 3.0 kg, BMI = 25.4 → overweight.
2024-03-12: m = 76.0 kg, ∆m = 4.0 kg, BMI = 25.7 → overweight.
2024-03-09: m = 76.5 kg, ∆m = 4.5 kg, BMI = 25.9 → overweight.
2024-03-02: m = 77.0 kg, ∆m = 5.0 kg, BMI = 26.0 → overweight.
2024-02-25: m = 78.5 kg, ∆m = 6.5 kg, BMI = 26.5 → overweight.
2024-02-25: Started slow-carb diet.
2024-02-23: m = 79.0 kg, ∆m = 7.0 kg, BMI = 26.7 → overweight.

Also see 2024-02-25: Slow Carb Diet and 2024-03-02: Heart Rate Zones