The only person who probably wouldn't really benefit from walking would be someone who was already very fit. If your exercise routine allows it, a mere thirty minutes at a moderate speed is enough as long as it is regular, around five times a week. Although not a high impact exercise, it can be tiring especially if you have decided to walk at a fast pace in which case regular breaks or periods where you slow the pace a little are required.
Try walking in different settings, alternating walking with dance on different days, and of course including a partner can be much more interesting than going at it alone. In fact there is a growing popularity for machines that can be used to mimic ordinary physical activities like walking, running, cycling and even skiing.
It is important to realize that walking is a great way to improve your weight loss is one of best exercises available. Weight-bearing activities, like walking and golfing, which involve lifting or pushing your own body weight is also excellent as two exercises are combined.
Two other benefits of walking are the cost, if you don't have a great budget (but do get a good set of walking boots or similar,) and the fact that it is considered a low impact activity do should not damage the joints. The American Heart Association (AHA) suggests, for example, that patients start by walking five minutes a day, then increasing gradually to 30 minutes over several weeks.
For anyone who is considering taking up regular exercise at the gym for instance then walking can be a perfect stepping stone as you will lose some weight and improve your stamina levels. However, to really give yourself some more versatility then a treadmill can make all the difference with a huge range of difficulty levels and programs all without leaving you home.
As far as home fitness equipment is concerned, treadmills are still the most popular and they can be used for running, walking or a gently jog plus there is less impact on a treadmill owing to the cushioning effect. Because the belt is motorized and not regulated by your own walking pace it allows for a huge degree of versatility whereby the speed and difficulty can be adjusted and the use of pre-set programs can increase your fat burning or improve your cardiovascular health.
However, the treadmill needs to have decent motor and ramp inclination range (for when you simulate walking up a hill) if it's going to be of any use. There may be many reasons why you prefer to use a treadmill, namely that your neighborhood doesn't have enough walking challenges and this way you can get all the benefits of walking a variety of conditions without leaving home.
A treadmill does give you the freedom to exercise when you want for as long as you want, so its convenience cannot be underestimated and as long as you do exercise, whether walking or some other form, it doesn't matter, just as long as you do actually exercise regularly.