When should you avoid diving entirely?

Avoiding diving when experiencing symptoms of illness or if under the influence of drugs is crucial for your safety and the safety of others. Diving when you are not feeling well can lead to a range of complications, including the exacerbation of existing conditions, increased risk of decompression sickness, or making decisions that could result in accidents or injury underwater. Also, certain medications may impair your judgment or physical abilities, which is particularly dangerous in an environment that requires full awareness and control.

While feeling tired can affect your diving performance, it does not inherently warrant avoiding a dive as strongly as health issues or drug use. Planning a dive during the day is generally considered safe, and having a new wetsuit does not, in itself, create a reason to avoid diving unless it specifically affects your ability to dive safely. Thus, the most critical factor in ensuring a safe diving experience is to prioritize your health and mental acuity above all else.