16:8 — início jejum
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
About this calculator
The 16:8 fasting start time calculator helps determine the ideal time to start intermittent fasting. The 16:8 fasting method involves eating within an 8-hour window and fasting for 16 hours. The formula used is simple: just subtract 8 hours from bedtime to find the last time to eat.
This intermittent fasting method is popular for being flexible and easy to follow. It can be adapted to different lifestyles and sleep schedules. However, it's essential to consider common precautions, such as maintaining a balanced diet during the eating window and avoiding dehydration during fasting.
The 16:8 fasting method can be beneficial for health, aiding in weight loss, improving insulin sensitivity, and increasing energy. However, it's crucial to consult a healthcare professional before starting any fasting plan, especially if you have pre-existing health conditions.
It's essential to remember that intermittent fasting is not suitable for everyone. People with a history of eating disorders, pregnant or breastfeeding women, and individuals with certain medical conditions should avoid fasting or consult a doctor before starting any fasting plan.
Frequently asked questions
What is the goal of 16:8 fasting?
The goal of 16:8 fasting is to aid in weight loss, improve metabolic health, and increase energy.
Can I drink water during fasting?
Yes, it is recommended to drink water during fasting to avoid dehydration.
How long does it take to see results with 16:8 fasting?
Results may vary from person to person, but it's common to see changes after a few weeks of regular fasting.
Is 16:8 fasting suitable for beginners?
Yes, 16:8 fasting is considered an easy-to-follow intermittent fasting method and is suitable for beginners.
Do I need to consult a doctor before starting 16:8 fasting?
Yes, it's recommended to consult a doctor before starting any fasting plan, especially if you have pre-existing health conditions.