Source of Recommendations
Last updated: April 1, 2026
CalChamps is an accountability app for food and habit tracking, created to help you build more mindful eating routines over time.
We share educational insights on how daily food choices and lifestyle habits may affect overall wellness, but CalChamps is not a medical device and is not intended to diagnose, treat, cure, or prevent any disease.
We do not provide treatment guidance for medical conditions or specialized clinical nutrition needs, including food allergies, eating disorders, or diabetes. For medical advice, diagnosis, or treatment decisions, consult a licensed healthcare professional.
Our goal is to help you understand the trade-offs behind everyday food choices and improve consistency through simple tracking habits and accountability.
The guidance in this app is informed by publicly available health information and research listed below. These sources are cited for transparency and are not affiliated with or endorsing CalChamps.
How we shape recommendations
We prioritize guidance that people can actually stick with over quick-fix advice. Our recommendations focus on steady progress, realistic routines, and long-term habits that support health [1].
That means we lean on major public-health organizations, national dietary guidance, and peer-reviewed studies when deciding what to recommend [7] [8] [9].
How recommendations are personalized
We start with broad health guidance, then personalize around your goals, activity level, and current starting point. We treat screening measures as guides, not labels, and avoid one-size-fits all advice [6].
Energy needs can vary a lot from person to person, so evidence- based estimation methods are used as practical starting points rather than rigid rules [14].
How we calculate (visual equations)
1) Daily energy estimate
Weight (kg) = Weight (lb) x 0.453592
Age = Current year - Birth year
BMR = 10 x weightKg + 6.25 x heightCm - 5 x age + sex offset
Sex offset: +5 (male), -161 (female)
TDEE = BMR x activity multiplier
Activity multipliers: sedentary 1.2, lightly active 1.375, moderately active 1.55, very active 1.725, super active 1.9.
2) Goal-based calorie target
Maintain: Calorie target = TDEE (or adjusted from weight difference)
Lose: Calorie target = max(TDEE - deficit, 1200)
Gain: Calorie target = TDEE + 300
This supports practical, sustainable progress rather than extreme swings [1].
3) Macro targets
Carbs (g) = (calories x carbs%) / 4
Protein (g) = (calories x protein%) / 4
Fats (g) = (calories x fats%) / 9
We keep these splits flexible so they can match your food preferences while staying within recognized intake ranges [12].
4) Hydration and steps
Hydration target (ml/day) = weightKg x 33
Step target = activity baseline +/- goal adjustment, capped between 5,000 and 16,000
We pair these with sleep and recovery habits because they strongly influence consistency and outcomes [4] [5] [13] [15].
What we emphasize day to day
1) Sustainable weight change
We favor gradual, maintainable progress rather than aggressive short-term cuts. Public-health guidance consistently supports steady change because it is more likely to be maintained [1].
2) Movement that fits real life
We center daily movement and weekly activity targets that align with major U.S. guidance, then encourage consistency over perfection [2] [7]. More movement over time is associated with better long-term outcomes [3] [15].
3) Better food quality, not just calories
We encourage eating patterns built around minimally processed, nutrient-dense foods and balanced meals. This mirrors national and global dietary recommendations for long-term health [8] [10] [11].
We also keep macronutrient balance practical and flexible, using established intake ranges as guardrails [12].
4) Hydration, sleep, and recovery
Good nutrition works best when paired with enough fluids, adequate sleep, and recovery habits. These basics strongly influence energy, adherence, and overall well-being [4] [5] [13].
5) Flexible meal timing
Meal timing approaches can help some people with structure, but we treat them as optional tools. The overall quality and consistency of daily habits generally matter more [16] [17].
Important note
This page is educational and not medical advice. If you have a health condition, are pregnant, are recovering from disordered eating, or take medications that affect nutrition, consult your licensed healthcare professional before making major changes.
References and citations
- 1. Steps for Losing Weight (Centers for Disease Control and Prevention (CDC))
- 2. Adult Activity: An Overview (CDC)
- 3. Health Benefits of Physical Activity for Adults (CDC)
- 4. About Water and Healthier Drinks (CDC)