Yoga is not a common training method specifically for ski and snowboard tours, although it can be beneficial for overall fitness and flexibility.

Interval training is a method of training that alternates between periods of high-intensity exercise and periods of rest or low-intensity exercise, which is effective for improving endurance.

Carving is not a technique commonly used in ski and snowboard tours, as it is more suited for groomed slopes and high speeds.

Side-stepping is a technique used to ascend steep slopes by moving sideways, one step at a time.

Traversing is a technique used to move across slopes horizontally, rather than ascending or descending.

Stemming is a technique used to stop on slopes by spreading the skis or snowboard apart and applying pressure to the edges.

While a helmet is important safety gear for skiing and snowboarding, it is not a specific piece of equipment required for ski and snowboard tours.

Skins are used to provide grip and traction when ascending steep slopes, allowing skiers and snowboarders to move uphill.

Crampons are used to provide additional grip and traction on icy slopes, preventing slipping and falls.

Skiing or snowboarding alone is not a recommended safety precaution, as it increases the risk of accidents and makes it more difficult to get help in case of an emergency.

Carrying a map and compass allows skiers and snowboarders to navigate through unfamiliar terrain and find their way back to the starting point.

Carving is not a technique commonly used to descend steep slopes in ski and snowboard tours, as it is more suited for groomed slopes and high speeds.

An avalanche beacon is used to locate buried skiers or snowboarders in the event of an avalanche, increasing the chances of survival.

Heli-skiing is not a common type of ski or snowboard tour, as it involves being transported to remote, high-altitude areas by helicopter, which is not typically part of a traditional ski or snowboard tour.