Sources
Last updated May 13, 2026
Not medical advice — please read this first
Alivid is a wellness app. Calorie targets, workout prescriptions, sleep tips, and any other health information shown in the app are general guidelines drawn from the sources below. They are not a substitute for advice from your doctor or another qualified clinician. If you have a medical condition, are pregnant, or are recovering from injury or surgery, talk to a professional before acting on anything Alivid shows you.
Alivid's AI coach interprets your data and gives suggestions in plain language. Those suggestions are grounded in the same authorities listed here, but the coach does not cite each one inline because most recommendations draw on several at once. The categories below show where the underlying claims come from. If anything in the app feels clinical or out of bounds, defer to your doctor.
Nutrition & macros
Calorie and macronutrient targets, food logging, and protein/fiber suggestions are grounded in mainstream dietary guidance.
- U.S. Dietary Guidelines for Americans (USDA / HHS) — Calorie ranges by age/sex/activity, macronutrient acceptable ranges.
- National Academies — Dietary Reference Intakes — Protein RDA (0.8 g/kg) and AMDR ranges for carbs/fat/protein.
- International Society of Sports Nutrition position stands — Protein for active populations (1.4–2.0 g/kg) and meal timing.
- NIH Office of Dietary Supplements — Vitamin and mineral reference values used in micronutrient call-outs.
Training & exercise
Workout prescriptions (intensity zones, sets/reps, RPE guidance, recovery) follow ACSM and related practice guidelines.
- ACSM — Guidelines for Exercise Testing and Prescription — Aerobic / resistance / flexibility programming and FITT-VP principle.
- American Heart Association — Recommendations for physical activity — 150 min/wk moderate or 75 min/wk vigorous aerobic baseline.
- WHO Guidelines on Physical Activity and Sedentary Behaviour — Global benchmarks for weekly volume and resistance training.
Sleep
Sleep duration, consistency, and recovery suggestions reference clinical sleep medicine guidance.
- American Academy of Sleep Medicine — Recommended sleep duration — 7+ hours per night for healthy adults.
- CDC — Sleep and Sleep Disorders — Population norms and sleep hygiene basics.
- NIH NHLBI — Healthy Sleep — Sleep stages, circadian rhythm, and adult sleep needs.
Heart rate & HRV
Resting heart rate, max HR, HRV trends, and training-zone references draw on cardiology and sports-science guidance.
- American Heart Association — Target heart rates — Heart-rate zones and resting-HR norms.
- Mayo Clinic — Heart rate: What's normal — Resting-HR ranges by age.
- Shaffer & Ginsberg, "An Overview of Heart Rate Variability Metrics and Norms" (Frontiers in Public Health, 2017) — HRV interpretation, SDNN/RMSSD norms.
Body composition & weight
Weight ranges, body-fat references, and target-weight suggestions follow standard clinical reference points.
- NIH — Calculate Your Body Mass Index — BMI categories and limitations.
- ACE Body Fat Categorization — Body-fat percentage reference ranges by sex.
General health & wellness
Foundational public-health references behind dashboard summaries and proactive nudges.
- Centers for Disease Control and Prevention — Activity, nutrition, and chronic-disease prevention guidance.
- National Institutes of Health — Background research underpinning most clinical guidelines above.
- Mayo Clinic — Plain-language clinical summaries used as a sanity check.
When to see a doctor
Alivid is not a diagnostic tool. Seek medical attention immediately for chest pain, severe shortness of breath, fainting, sudden severe headache, signs of stroke, suicidal thoughts, or any symptom that feels urgent. For non-urgent concerns — persistent fatigue, unexplained weight change, ongoing pain, mood changes, or anything Alivid's readings make you wonder about — talk to your primary-care provider before changing your training, diet, or medication.
Contact
Questions about a specific source or how Alivid interprets it? Email hello@alivid.app.
