Person doing low-impact cardio movements at home in a bright living room

Zone 2 Cardio at Home: No Equipment

Learn how to do Zone 2 cardio indoors with low-impact moves, heart rate, RPE, and the talk test. No treadmill or bike required.

Apr 23, 2026 9 min read

Person sitting on a mat after a home bodyweight workout, checking sore legs before the next session

Fitness Tips

Sore Muscles After a Workout: DOMS or Injury?

Sore after a short home workout? Learn how DOMS differs from possible injury, what red flags mean, and how to adjust your next RazFit session.

Apr 22, 2026 9 min read

Person cooling down with gentle stretching after a short bodyweight workout at home

Quick Workouts

Cool-Downs After Short Workouts

A short workout does not need a long cool-down. Use a proportional 30-second to 3-minute reset after intense 1-10 minute sessions.

Apr 21, 2026 8 min read

Brain neural reward pathway visualization with glowing connections

Motivation

Dopamine, Streaks, and Workout Motivation

How dopamine reward circuits, variable reinforcement, and streak mechanics drive workout consistency. Neuroscience behind badges, AI trainers, and habit loops.

Apr 20, 2026 11 min read

Person performing bodyweight HIIT exercises on a mat at home

Fitness Tips

HIIT vs Steady-State Cardio: Full Comparison

HIIT and steady-state cardio improve VO2max, mental health, and longevity through distinct mechanisms. Here is what the evidence shows and how to use both.

Apr 19, 2026 10 min read

Person exercising outdoors at dawn, dramatic morning light

Lifestyle

Morning vs Evening Workouts by Goal

The best workout time depends on your goal. Fat loss, strength, and sleep quality each point to different optimal training windows. Evidence-based guide.

Apr 18, 2026 16 min read