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Don't just go for one or the other. Do both! Interval training works both the aerobic and the anaerobic system.  It involves high intensity exercise followed immediately by reduced activity rather than complete rest..

 

Example: 6 (repetition) 400 meter sprints in 100 seconds - followed by a 100 second rest.

 

According to Spanish researchers, by slow jogging instead of completely resting between intense activity can make you able to exercise harder and gain greater aerobic capacity.  This activity is crucial for pushing your blood back to your heart.  Thus, instead of passive resting, (stretching or simply standing),

 

Try these 4 exercises between high intensity sets:

 

1) Slow Jogging - Jog slowly or jog in place

2) Light Jumproping - In the same mentality as jogging

3) Calf Raises - do sets of 10 calf raises with 10-20 second rests

4) Proprioceptor exercises - plug the Proprioceptors in and walk the tightrope, do rotations or front back exercises.

 

Other exercises like pushups, situps, or cone hops done in short spurts can be substituted.

 

(Runnersworld, April 2005)

(FitnessRx, November 2005)