Heart rate Zone Training+ workouts offer the efficiency of monitoring your target heart rate and the benefits of interval training. Just wear a Polar chest strap or use the digital contact sensors on the X9i and the resistance will automatically adjust so you stay within your target heart rate zone. Zone Training+ workouts include:

Cardio: Maximizes calorie burn and boosts your energy level. Automatically adjusts resistance to maintain your heart rate at 80% of your theoretical maximum. (Standard on our X3i, X5i and X9i models; optional on our X3 and X5 models.)

Fat Burn: A great workout for beginners or for those days when you need a lighter workout. Automatically adjusts resistance to maintain your heart rate at 65% of your theoretical maximum. (Standard on our X3i, X5i and X9i models; optional on our X3 and X5 models.)

Heart Rate Hill™ Workout: An interval workout made up of a series of hills. Once you have remained at the top of a hill for one minute, you will be able to attempt the next one. The resistance begins at 90% of your target heart rate (THR) and becomes progressively tougher (95% THR and then 100% THR). Similar to training for sports activities such as hockey, basketball and soccer. (Standard on our X3i, X5i and X9i models; not available on our X3 and X5 models.)

Heart Rate Interval™ Workout: Climb a series of alternating hills (100% THR) and valleys (90% THR). The number of times you climb each hill depends on your fitness level. Similar to training for endurance activities such as triathlons and running. (Standard on our X3i, X5i and X9i models; not available on our X3 and X5 models.)

Extreme Heart Rate™ Workout: Quickly raises (100% THR) and lowers (75% THR) your heart rate to get it up and down as quickly as possible. Similar to training for sports activities such as tennis, racquetball, football and sprinting. (Standard on our X3i, X5i and X9i models; not available on our X3 and X5 models.)

Simulate outdoor training with a rigorous workout that features hundreds of different hills and valleys using a wide range of high and low levels of resistance. (Standard on our X3, X3i, X5, X5i and X9i models.)

This workout slowly and progressively increases resistance so you're less aware of the building demands. (Standard on our X3, X3i, X5, X5i and X9i models.)

Maximize both your upper and lower body results with these exclusive Life Fitness programs. Each program acts like a personal trainer - prompting you to activate different muscle groups in your body.

Cross-Train Aerobics - The electronic display tells you when to push, pull, perform lower body only or change speeds. (Standard on our X3i, X5i and X9i models; not available on our X3 and X5 models.)

Cross-Train Reverse - The electronic display tells you when to pedal forward or backward. (Standard on all X-Series models.)

Save time by storing up to four pre-programmed Life Fitness workout programs and replay them at any time. Rename them for different days of the week or different users in your household. Your weight and resistance levels are automatically saved, and you can also store personal results for each workout program to keep track of your progress. (Standard on our X3i, X5i and X9i models; not available on our X3 and X5 models.)

Built with the same linkage system as our health club models, you'll get the fluid, gliding motion and unmatched durability of our commercial products.

Our innovative elliptical system combines this exclusive drive with a virtually silent poly V-belt. Together, they produce a synergy that gives you a tremendously smooth feel. Plus, a remarkably quiet workout so you can easily listen to the TV or hear the baby in a nearby room. (Standard on our X3, X3i, X5 and X5i models; not available on our X9i model.)

This durable, magnetic electronically controlled system works in tandem with the Link6 elliptical drive, so you can train as gently or intensely as you wish, at any of the 20 intensity levels. (Standard on our X3, X3i, X5 and X5i models;
not available on our X9i model.)

Keep your rhythm throughout your workout with a variety of resistance levels. As you change from level to level, you'll feel a smooth, natural transition with no jarring or jerking movements. (Standard on all X-Series models.)

These large pedals offer you the most natural and comfortable positioning for your feet with thoughtful safety rims and non-slip tread. These pedals are also closely spaced to each other to minimize lateral hip shifting that could put stress on your lower back. (Standard on all X-Series models.)