What would be a great physical fitness program(aerobic fitness, muscular strength. and flexibility tests) that a person could do for 12 weeks?good...

Before anyone begins a new fitness routine, they should
have a medical checkup and discuss their exercise plans with their doctor. Once that is
done, the Mayo
Clinic suggests that you first assess how fit and flexible you already are, to
establish a baseline for planning purposes. Then you should set reasonable goals based
on your current level of fitness.

href="http://www.webmd.com/balance/the-health-benefits-of-yoga">Yoga would
be an excellent activity to include in your routine, as it includes stretching,
flexibility, and strength exercises, and it can be done with anywhere with very little
equipment (a floor mat is a good idea).  You can find free online yoga instruction at
lots of websites, including the ones
here and href="http://www.fitnessmagazine.com/workout/yoga/poses/yoga-poses-beginner-intermediate-advanced/">here.

The
other piece that you need to include is a cardio workout. Walking or jogging is the
easiest way to get your heart fit. Doing href="http://www.medicinenet.com/interval_training/article.htm">interval
training, where you vary the intensity of the workout, is a great way to get
the maximum amount of fitness in the shortest amount of
time.

Alternating a day of yoga with a day of aerobic
interval training would be a great, complete plan. Keeping track of your exercise in a
journal or having an exercise buddy are two good ways to stay on track with your
program.