5 doctors weighed in:

Will exercising laid down on a recumbent bike for 30-45mins at 140-160bpm Age 23, male. 4-6 times per week get my endurance up? I want to be VERY fit.

5 doctors weighed in
Dr. Thomas Dowling
Orthopedic Surgery - Spine
4 doctors agree

In brief: Keep up the regular

exercise but you may want to vary the type of exercise and intensity while incorporating not only cardiovascular workouts of various types with periods of increased intensity during each workout but also include some weight training and flexibility while avoiding overuse injury by being very repetitive or rapidly getting onto an exercise routine without proper planning.
Speak to your physician.

In brief: Keep up the regular

exercise but you may want to vary the type of exercise and intensity while incorporating not only cardiovascular workouts of various types with periods of increased intensity during each workout but also include some weight training and flexibility while avoiding overuse injury by being very repetitive or rapidly getting onto an exercise routine without proper planning.
Speak to your physician.
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