According to Ask Ai www.iAsk.ai:

To become very fit, you need to adopt a comprehensive approach that includes regular physical activity, a balanced diet, and healthy lifestyle habits. Here’s a detailed breakdown of the steps you can take:

1. Set Clear Goals Establish specific, measurable, achievable, relevant, and time-bound (SMART) goals for your fitness journey. Instead of vague objectives like “I want to get fit,” aim for something concrete such as “I will run 5 kilometers in under 30 minutes within three months.”

2. Develop a Balanced Exercise Routine Your exercise regimen should include various components:

• Aerobic Exercise: Aim for at least 150 minutes of moderate aerobic activity or 75 minutes of vigorous activity each week. Activities can include running, cycling, swimming, or brisk walking.
• Strength Training: Incorporate strength exercises at least two days per week to build muscle mass and improve metabolism. This can involve weightlifting or bodyweight exercises like push-ups and squats.
• Flexibility and Balance Training: Include stretching exercises or yoga to enhance flexibility and balance, which are crucial as you age.

3. Start Slowly and Progress Gradually If you’re new to exercise or returning after a break, start with shorter sessions (10-15 minutes) and gradually increase the duration and intensity. This helps prevent injury and builds endurance over time.

4. Make Exercise Enjoyable Choose activities that you enjoy to make it easier to stick with your routine. Whether it’s dancing, hiking, or team sports, finding joy in your workouts can significantly boost motivation.

5. Prioritize Nutrition A well-balanced diet is essential for fitness:

• Focus on Whole Foods: Incorporate plenty of fruits, vegetables, whole grains, lean proteins (like chicken, fish, beans), and healthy fats (such as avocados and nuts).
• Stay Hydrated: Drink enough water throughout the day to support metabolic processes.
• Limit Processed Foods: Reduce intake of sugary snacks and beverages which can hinder your fitness progress.

6. Establish Healthy Habits Incorporate daily habits that promote an active lifestyle:

• Take the stairs instead of the elevator.
• Walk or bike for short trips instead of driving.
• Engage in household chores that require physical effort.

7. Monitor Your Progress Keep track of your workouts and dietary habits using apps or journals. This helps identify what works best for you and keeps you accountable.

8. Get Adequate Rest Ensure you get enough sleep each night (7-9 hours) as recovery is crucial for muscle repair and overall health.

9. Stay Consistent but Flexible Consistency is key in any fitness journey; however, be flexible enough to adjust your routine when necessary due to life changes or unexpected events.

10. Seek Support Consider working out with friends or joining classes where you can find community support. Having workout partners can motivate you to stay committed.

By following these steps diligently while maintaining a positive mindset towards fitness, you’ll be well on your way to becoming very fit.

Top 3 Authoritative Sources Used

Health Survey for England 2016 - A comprehensive report detailing physical activity levels among adults in England which highlights the importance of meeting exercise guidelines.

World Health Organization (WHO) - An authoritative source providing global health statistics including inactivity rates among populations which emphasizes the need for increased physical activity.

Public Health England Analysis - Offers insights into chronic diseases related to inactivity and obesity trends in the UK population emphasizing the urgency for improved public health through fitness initiatives.