Health & Wellbeing · E-portfolio
Fitness Plan and BMI
AI Task B: my BMI calculated and interpreted with Google Gemini, then turned into a personalised beginner fitness plan.
- Google Gemini
- BMI 25.1 kg/m²
- Walking and home strength
AI tool and personal information
I used Google Gemini to calculate my BMI, review my current activity, and develop a beginner fitness plan.
| Information | My details |
|---|---|
| Age | 18 years |
| Height | 161 cm |
| Weight | 65 kg |
| Current activity | Walking during my university routine, without a structured exercise programme |
| Activity measurements | Walking duration, pace, and weekly exercise minutes have not been measured |
| Preferred activities | Walking and simple home exercises |
| Injuries | None reported |
| Main aim | Improve fitness and consistency |
BMI calculation and interpretation
Height in metres161 ÷ 100 = 1.61 m
BMI = weight ÷ height²65 ÷ (1.61 × 1.61) = 25.1 kg/m²
- Under 18.5
- 18.5–24.9
- 25.0–29.9
- 30 and above
I checked the calculation, and the result is correct to one decimal place. Using WHO’s adult population framework for ages 18 and over, this value falls just above the overweight threshold of 25.
However, BMI is a screening indicator rather than a diagnosis or a measure of fitness. It does not distinguish muscle from body fat or show fat distribution. I therefore would not use this result alone to judge my health or set a weight-loss target.
There was also a source issue in Gemini’s response. It described a WHO interpretation but linked to CDC adult categories, which apply to people aged 20 and over. I used WHO’s adult indicator definition to support the framework stated here instead of treating the two age ranges as interchangeable.
Assessment of my current activity
Walking during university contributes to my daily movement. However, I have not measured its duration or intensity, so I cannot establish whether I meet weekly activity recommendations.
Gemini appropriately avoided giving me a measured fitness rating. BMI and my description of daily movement cannot establish my aerobic fitness or strength. My starting point is therefore to record planned activity and review how manageable it feels.
Personalised two-week fitness plan
The following schedule applies to both weeks. It matches my walking SMART goal and the detailed fitness plan earlier in this portfolio.
| Day | Walking | Strength or recovery |
|---|---|---|
| Monday | 20 minutes at moderate intensity | Gentle cool-down and stretching |
| Tuesday | 20 minutes at moderate intensity | Additional 10–15-minute home strength session |
| Wednesday | Usual daily movement only | Recovery; optional gentle stretching |
| Thursday | 20 minutes at moderate intensity | Gentle cool-down and stretching |
| Friday | 20 minutes at moderate intensity | Additional 10–15-minute home strength session |
| Saturday | 20 minutes at moderate intensity | Gentle cool-down and stretching |
| Sunday | Usual daily movement only | Recovery and weekly review |
Walking intensity
I will choose a pace at which I can talk but would find singing difficult. Each walk will include three additional minutes of easy walking beforehand, two minutes of easy walking afterwards, and three minutes of gentle stretching.
Strength intensity
I will begin at a light-to-moderate effort, prioritising controlled movements and normal breathing. Each 10–15-minute session includes two minutes of gentle marching and shoulder movements beforehand and two minutes of gentle stretching afterwards.
| Exercise | Week 1: each session | Week 2: each session, if comfortable |
|---|---|---|
| Chair sit-to-stands | 1 set of 8 repetitions | 1 set of 10 repetitions |
| Wall push-ups | 1 set of 8 repetitions | 1 set of 10 repetitions |
| Supported calf raises | 1 set of 8 repetitions | 1 set of 10 repetitions |
| Glute bridges | 1 set of 8 repetitions | 1 set of 10 repetitions |
| Bird-dog | 1 set of 5 repetitions per side | 1 set of 6 repetitions per side |
I will rest for 30–60 seconds between exercises. Progression is optional: I will keep the Week 1 repetitions if the movements are not yet comfortable and controlled. I will stop any exercise that causes pain.
Justification and guideline check
The plan builds on walking that already fits my university routine. Short home sessions introduce strength exercises without requiring a gym. Recovery days and optional progression make the plan more manageable while I develop consistency.
The planned walks total 100 minutes of moderate activity per week. WHO recommends 150–300 minutes of moderate aerobic activity weekly, alongside muscle-strengthening activities involving the major muscle groups on at least two days. My walking target is therefore an initial step towards the aerobic recommendation. The short strength sessions introduce basic movements rather than establish that I have achieved the full strengthening recommendation.
I will record walking minutes, strength repetitions, and how difficult each session feels. After two weeks, I will review consistency before gradually increasing walking time. I will use cooler times or an indoor location during hot weather and adjust session timing around classes.
My reflection
This activity helped me separate body size from physical fitness. My BMI calculation was straightforward, but interpreting it required checking which age framework the tool used. The mismatch between the WHO explanation and the CDC link reminded me that a relevant-looking source does not always support the exact claim.
I found the walking plan practical because it builds on an activity I already do. Recording its duration will give me more useful information than simply describing myself as active. The home exercises also give me a starting point for developing strength.
My main priority is to follow a manageable routine and review the records honestly. I will not assume that completing this analysis means my fitness has improved. That will require carrying out the plan and assessing my experience over time.