The entry trick on boxes and rails: straight across, board flat, weight centred. The boardslide grows out of it later — a 90-degree turn across the feature.
Avalanche transceiver, probe and shovel — the three parts of companion rescue. None works alone, and the transceiver goes under your jacket, never in your pack.
The strip under a ski or splitboard whose hairs grip when you slide back and lie flat when you glide forward. Mohair/nylon blends (often 70:30) are the standard.
Binding angles with both feet turned outward. The park standard starts at +15°/−15°, which opens the hips evenly and makes riding switch workable at all.
A jump powered by your own legs, with no edge or ramp: load the tail, then extend both legs explosively. It's the base for practically every park trick.
The gradient you hold when setting the climbing track. 12 to 15 degrees is the efficient corridor; past about 20 degrees even good skins noticeably lose grip.
Riding backwards — on a board with your normally trailing foot in front, on twin-tip skis tails first. From a normal stance, every odd rotation (180, 540) lands you switch.
The switch from climbing mode to riding mode at the summit. With a drilled routine, experienced riders are done in 60 to 90 seconds — unpractised, it costs many times that.
General
Terms from training theory that apply in every sport.
BMR is your basal metabolic rate at complete rest; TDEE is total daily expenditure including everyday movement and training. Nutrition targets always work off TDEE.