Yes, a fitness cancellation can be valid via email as long as the gym or fitness center accepts cancellations through email as a valid form of communication. It is important to check the terms and conditions of the membership agreement to see if email cancellations are accepted. It is also recommended to keep a copy of the email confirmation of the cancellation for your records in case any disputes arise. **

Some fitness nutrition tips include consuming a balanced diet that includes a variety of fruits, vegetables, lean proteins, and whole grains. It's important to stay hydrated by drinking plenty of water throughout the day. Additionally, timing your meals and snacks around your workouts can help provide the necessary energy and nutrients for optimal performance. Lastly, it's important to listen to your body and fuel it with the nutrients it needs to support your fitness goals. **

Without more context or information about the stamp in question, it is difficult to determine if it is valid. Stamps can become invalid if they are expired, counterfeit, or not properly affixed to the mail. It is important to check the date, authenticity, and condition of the stamp to ensure its validity. **

Based on the information provided, it appears that the contract may not be valid as it was signed under duress. Duress involves one party using threats or coercion to force the other party to enter into the contract. In this case, the threat of losing the job if the contract was not signed could be considered duress. Contracts signed under duress are typically not considered legally binding. It is advisable to seek legal advice to determine the validity of the contract in this situation. **

Written prayers can be valid if they are sincere and heartfelt expressions of one's faith and devotion. Many religious traditions have a long history of written prayers that are considered valid and meaningful. However, the sincerity and intention behind the written prayer are important factors in determining its validity. Ultimately, the validity of a written prayer depends on the individual's personal beliefs and the significance they attribute to the act of prayer. **

To determine if your ETA (Electronic Travel Authorization) is valid, you can check the status on the official website of the government of the country you are traveling to. You will need to enter your passport and personal information to verify the validity of your ETA. It's important to ensure that your ETA is valid before traveling to avoid any issues at the border or immigration control. If your ETA is not valid, you may need to reapply or obtain the necessary travel authorization before your trip. **

To determine if the stamp is valid, you should check the date of issue and any expiration date. Additionally, you should verify if the stamp meets the postal service's requirements for size, weight, and denomination. If the stamp meets all these criteria, then it is likely valid for use. However, it's always best to consult with the postal service or a postal clerk for confirmation. **

Without specific details about the advertisement in question, it is difficult to determine its validity. Validity of an advertisement can depend on various factors such as the accuracy of the information presented, compliance with advertising regulations, and the authenticity of the product or service being promoted. It is important to carefully evaluate the advertisement in question and consider these factors before determining its validity. **