Swim trunks suitable for swim training should be made of a durable, quick-drying material such as polyester or nylon. Look for trunks with a secure, adjustable waistband to ensure a snug fit while swimming. Additionally, consider trunks with a streamlined design to minimize drag in the water. Finally, choose trunks that offer freedom of movement and comfort for long training sessions. **

Yes, swimming is often incorporated into training programs for various sports and fitness activities. Swimming is a low-impact, full-body workout that can improve cardiovascular endurance, strength, and flexibility. It can also be a great way to cross-train and prevent overuse injuries. However, it's important to consult with a coach or trainer to ensure that swimming is a suitable and safe addition to your training regimen. **

It is not advisable to attempt to swim 12 km without proper training. Swimming long distances requires a high level of cardiovascular endurance, muscular strength, and proper technique. Without training, the risk of injury, exhaustion, and even drowning is significantly higher. It is important to gradually build up to longer distances through consistent training and proper preparation to ensure safety and success in swimming such a distance. **

It is possible for some people to swim 5 km without specific training, especially if they have a strong swimming background or are in good physical condition. However, for most people, swimming 5 km without training is not advisable as it can lead to exhaustion, muscle fatigue, and potential injury. It is important to gradually build up endurance and strength through regular training and practice to safely and effectively swim long distances. **

It is generally recommended to swim before strength training. Swimming is a full-body workout that engages multiple muscle groups and can serve as a good warm-up for strength training. Additionally, swimming can help improve flexibility and mobility, which can be beneficial for performing strength exercises with proper form. However, it is important to listen to your body and adjust your routine based on your individual needs and goals. **

Strength training can increase muscle size and definition in the hands, but it does not directly make the hands bigger in terms of bone structure or overall size. The muscles in the hands and forearms can become more developed and defined with strength training, which can give the appearance of larger hands. However, the actual size of the bones and structure of the hands will not change significantly as a result of strength training. **

The hand shakes after training because of muscle fatigue and exhaustion. During training, the muscles in the hand and arm are put under stress and strain, causing them to become fatigued. This fatigue can lead to involuntary muscle contractions, resulting in the hand shaking. Additionally, the body's natural response to physical exertion is to release adrenaline, which can also cause tremors and shaking in the muscles. **

Swim trunks used for training are typically made of durable and quick-drying materials such as polyester or nylon. They are designed to provide a snug and comfortable fit to reduce drag in the water and improve performance. Training swim trunks often have a streamlined design with features like a drawstring waist and a supportive liner to ensure they stay in place during rigorous workouts. **