yes it helps your thighs and its good for your heart :)
It takes quite a while to build muscle from walking, but it takes only a short time to build good strong leg muscle from jogging or running.
muscle-building (provided you exercise).
Of course it does. If walking builds muscle then walking at an incline builds muscle. Different muscles will be worked at different angles.
While 'anaerobic' exercise - exercise that concentrates on intense activity over shorter periods - is specifically good for building power and muscle mass, aerobic forms of exercise - such as walking, hiking, swimming, riding a bicycle, or (unsurprisingly) 'aerobics' are good for building endurance, general tone, and cardio-vascular fitness without building a great deal of muscle bulk.
protein clean diet and weight training
CLA
Because it is exercise, and exercise is very good for your health, and for building strong bones.
both are good for muscle building.
A good pair of running shoes...
Any excercise is good for your cardiac muscle. I'd suggest swimming and walking because they are gentle. Go ask an exercise expert or a doctor for specific details.
yes because it doubles the magnitude of muscle building signals
Walking and biking both build muscle tone, especially in the lower body. Pumping arms while walking briskly will help increase muscle tone in upper body.