Probably the best non evasive type of exercise.  Cycling is easy on the knees yet gets the heart pumping as it should.  It is easily adjustable to apply the type of workout you are looking for.  Amazingly aerobic.  My grandfather was still riding a bike in Europe at the age of 90, so I know this type of activity is good for many people.

Indoor Bike Trainer Exercise Stand, Orange

Heavy duty construction w/ extra wide frame for stability - folds quickly
Sturdy mounting cups reduce slippage (quick release included)
Single adjustment, progressive magnetic resistance

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Price: $77.52 $59.95

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Velocity Exercise Indoor Cycle (Black)

40 lb flywheel for a smooth and quiet ride
Double direction with emergency brake
3 piece crank

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RAD Cycle Products Indoor Portable Magnetic Work Out Bicycle Trainer

State of the art technology: As soon as you begin to pedal, the ultra QUIET internal magnet creates resistance
Extremely Portable: The MAG Trainer is extremely light and it can be folded down like an ironing board for travel and storage
Maximum Stability, one of the most robust and sturdy stands on the market; extra wide legs and a sturdy frame makes this the trainer the pros choose

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Price: $229.95 $66.63

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Keiser M3 Indoor Cycle

Sophisticated indoor training cycle with eddy current resistance system
Offers infinitely adjustable resistance system for challenging workout
Smooth, whisper-quiet operation; 4-way adjustable seat

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Price: $1,795.00

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Schwinn AD2 Airdyne Bike

Unique, full-body cardiovascular exercise bike with synchronized arm and leg motion
Progressive resistance system offers infinite levels of challenge
Simple to use LCD console with speed, RPM, distance, time and calories

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Price: $350.72 $317.46

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Magnet Steel Bike Bicycle Indoor Exercise Trainer Stand by FDW

Five internal resistance settings.
Quiet design, very low noise.
Easy fold for travel and storage. Heavy duty steel frame.

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Price: $53.98

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Schwinn A10 Upright Bike

Easy to read large LCD window tracks your speed, time, distance, calories and more
7 workout programs to keep you challenged
8 levels of magnetic resistance

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Price: $249.00

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Stamina 1300 Magnetic Resistance Upright Bike

Upright stationary bike for effective low-impact aerobic exercises in your home
Smooth magnetic resistance with tension dial for adjusting intensity
Large, easy-to-read monitor displays speed, distance, time, and calories burned with one-button control

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Price: $250.00 $129.99

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Velocity Exercise Magnetic Upright Exercise Bike

Weighted two way flywheel
8 levels of tension control
Built in transport wheels for easy transportation and storage

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Price: $154.53 $119.99

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Stamina 15-0120 InStride Cycle XL

Seatless-exercise cycle with electric progress monitor
Sturdy rubber straps hold feet or hands for full-body workout
Adjustable tension knob lets you vary workout intensity

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Price: $39.20

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Sunny Health & Fitness Belt Drive Indoor Cycling Bike, Grey

Fully adjustable seat and handlebar
Heavy duty steel frame with a 49lbs flywheel
Belt drive mechanism for smooth and quiet workouts

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Price: $333.19 $332.70

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Schwinn 130 Upright Bike

Dual track two LCD window system allows you to monitor up to 13 different display feedbacks
Schwinn Connect goal tracking and data export keep you up to date on reaching your fitness goals
22 programs, 2 user settings and goal tracking are all there to keep you motivated and challenged

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Price: $334.62

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Marcy Upright Mag Bike

Upright exercise bike with smooth magnetic resistance system
8 levels of preset resistance accommodates several fitness levels
Large console display tracks time, distance, speed, and calories burned

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Price: $137.99 $129.99

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Folding Recumbent Exercise Bike by Sunny Health & Fitness – SF-RB1117

Stowaway recumbent bike with folding frame for easy storage
Adjustable magnetic resistance system and nonskid foot pedals with straps
Display features Time, Speed, Distance, and Calories

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Price: $98.95 $98.00

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Sunny Health & Fitness Pro Indoor Cycling Bike

Indoor cycling bike with 40-pound flywheel
Heavy-duty crank and smooth chain drive mechanism
Fully adjustable seat and handlebars for comfort

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Price: $299.00 $229.97

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Body Rider Exercise Upright Fan Bike (with UPDATED Softer Seat)

Dual-action handlebars engage an upper and lower body workout
Tension adjusts easily with the turn of a knob
Fan wheel provides a gentle breeze as you exercise

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Price: $124.02 $99.98

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