FITIV Pulse vs Norwegian 4x4 Protocol

TRAIN. RECOVER. ACHIEVE. FITIV is the all-in-one workout and health tracker that helps you train smarter with heart rate zones, HRV, sleep, recovery, and strength. New: connect your Fitbit, including Fitbit Air, through Google Health and see everything in one place. Track workouts, heart rate, calories, recovery, sleep, stress, training load, and strength training in one powerful performance app for Apple Watch, Fitbit (including Fitbit Air), Garmin watches, Bluetooth heart rate monitors, WHOOP, Oura, AirPods Pro (3rd generation), and Powerbeats Pro 2. NEW: FITBIT AIR AND GOOGLE HEALTH • Connect your Fitbit or Fitbit Air through Google Health • Sync workouts, steps, sleep, heart rate, weight, and vitals into FITIV • Save your FITIV workouts and weight back to Google Health • Health Data Sources: see which app and device recorded each metric, turn sources on or off, and rank your sleep sources HEART RATE MONITOR & ZONE TRAINING • Live heart rate monitoring during workouts • Heart rate zone tracking for cardio, endurance, and interval training • Resting heart rate insights • Live heart rate from Bluetooth monitors, AirPods Pro (3rd generation), and Powerbeats Pro 2 • Broadcast heart rate to Peloton, Zwift, Concept2, and compatible gym equipment • Live coaching with real-time voice feedback during workouts RECOVERY, SLEEP & READINESS Recovery drives performance. FITIV helps you understand when to push and when to recover. • Sleep tracking with overnight metrics and vitals • HRV tracking and recovery insights • Stress tracking and daily strain monitoring • Training readiness, recovery score, and recovery trends WORKOUT TRACKING FOR EVERY WAY YOU TRAIN • Workout tracking for cardio, gym, intervals, and endurance sessions • HIIT timer and interval workout support • GPS workout maps with pace and heart rate overlays • Advanced workout metrics, including training load and VO2 • Live streaming workout data from Apple Watch to iPhone STRENGTH TRAINING & GYM LOG • Log reps, sets, weight, and training volume • Workout templates with folders, or start an empty session in one tap • Smart exercise search that understands shorthand like RDL • 44 new exercises and rewritten how-to instructions • Track personal records, strength progress, and progressive overload WEIGHT & GLP-1 MEDICATION TRACKING Lose the weight, not the muscle. Experts recommend strength training while on GLP-1 medications, and FITIV is built to track both. • Log doses for Zepbound, Mounjaro, Ozempic, Wegovy, and other GLP-1 injections and pills • Dose reminders, titration schedules, and estimated medication levels • Daily side effect check-ins to spot patterns • Weight trend and goals, with progress per medication, and a shareable milestone when you reach your goal ADVANCED PERFORMANCE & HEALTH METRICS • Training load tracking with TRIMP, TSS, and active calorie-based load • Advanced running metrics, including stride length, running power, and vertical oscillation COMPATIBLE DEVICES & INTEGRATIONS • Apple Watch and iPhone • Fitbit (including Fitbit Air) through Google Health • Garmin watches • Bluetooth heart rate monitors: Polar, Scosche, COOSPO, Myzone, and more • AirPods Pro (3rd generation) and Powerbeats Pro 2 • WHOOP, Oura, and other connected fitness platforms • Google Health, MyFitnessPal, Strava, TrainingPeaks, Lose It!, Peloton, Zwift, and Spotify • Support for widgets, complications, Live Activities, and Dynamic Island Upgrade to FITIV Pro to unlock advanced recovery analytics, training readiness, deeper metrics, and structured workout features. SUBSCRIPTION & TERMS FITIV Pro offers monthly and yearly auto-renewing subscriptions, charged to your Apple ID. Cancel anytime in your Apple ID settings at least 24 hours before renewal. Terms of Service: https://fitiv.com/terms-conditions Privacy Policy: https://fitiv.com/privacy-policy

Norwegian 4x4 HIIT Timer — Interval Training & VO2 Max BOOST VO2 MAX WITH NORWEGIAN 4X4 PROTOCOL WORKOUTS Train smarter with the Norwegian 4x4 protocol, one of the most studied HIIT methods for improving cardiovascular performance and endurance. A precise, distraction-free timer guides every interval so you can focus on the effort. KEY FEATURES: - Norwegian 4x4 Timer - Precision 4min work / 3min rest cycles - Heart Rate Training - Track 90-95% max HR zones - VO2 Max Improvement - Scientifically proven results - HIIT Interval Timer - Multiple workout protocols - Progress Tracking - Monitor your fitness transformation - Universal Training - Running, cycling, rowing, any cardio, you name it - Offline Ready - No internet required during workouts - Haptics Feedback and Vibrations - Countdown before the start - Customizable Warmup session length - Customizable Cooldown session length WHAT IS NORWEGIAN 4 BY 4 TRAINING? The Norwegian 4x4 protocol is a revolutionary HIIT method featuring: - 4 intervals of 4 minutes at 90-95% max heart rate - 3 minutes active recovery between intervals - Proven results: Increase VO2 max by up to 10% in 8 weeks - Elite approved: Used by professional athletes worldwide WHY CHOOSE NORWEGIAN 4X4 INTERVAL TRAINING? - PROVEN RESULTS: Sports science research shows significant cardiovascular improvements - BEGINNER FRIENDLY: Complete guide for Norwegian 4x4 workout beginners - CUSTOMIZABLE: Adapt the Norwegian 4 x 4 protocol to your fitness level - COMPREHENSIVE: Includes warm-up, cool-down, and recovery protocols - VALIDATED: Mention in Tim Ferriss' Blog PERFECT FOR: - Athletes seeking performance gains with Norwegian 4x4 workouts - Fitness enthusiasts wanting efficient HIIT interval training - Anyone improving cardiovascular health through proven protocols - Runners, cyclists, rowers using Norwegian 4x4 interval training HOW OFTEN NORWEGIAN 4X4? - Our app includes guidance on optimal training frequency and recovery for maximum VO2 max gains. START YOUR NORWEGIAN 4X4 TRANSFORMATION Join thousands who have revolutionised their fitness with the Norwegian 4x4 protocol training. Download the ultimate Norwegian 4x4 workout app now! Download today and start training with the Norwegian 4x4.