Indoor Cycling (https://crufit.net/pages/cycling) -- find a place with bikes that measure power output and heart rate so that you have an objective measure how hard you're working. Subjective measures are sneaky....
All of that supports telemark skiing, mtn biking, surfing (aka, falling, swearing).
TRX (https://crufit.net/pages/trx and http://www.flying-studios.com/strength) -- Core conditioning, I like the structure and the ability to dial the difficulty up/down depending on what my body's up for.
Circuit training classes (https://crufit.net/pages/circuit-training) -- strength and cardio.
Yoga (http://www.flying-studios.com/yoga/) -- Flow and Happy Hour.
Indoor Cycling (https://crufit.net/pages/cycling) -- find a place with bikes that measure power output and heart rate so that you have an objective measure how hard you're working. Subjective measures are sneaky....
All of that supports telemark skiing, mtn biking, surfing (aka, falling, swearing).