Again this is an all too common scenario, really. There are a number of points to clarify and the first is that BMI is a pretty crude measure of health. It doesn't take into account the difference between body fat and muscle mass. The worry with that is that, we can sometimes have a fairly normal BMI but high body fatness because of a low muscle mass.
So BMI has its place but it's not the ultimate of measure of whether you're in a healthy weight range protected from a mortality, morbidity perspective. The fact that it's gone into the obese range is certainly a concern. It's actually a good thing to be recognising what’s going on and wanting to do something about it. In terms of the nutrition side, I think it's probably a good idea to get a review and make sure.
It's very common for people to lose weight and put on weight in that yo-yo sort of fashion. Previous experiences might be something that need to be reviewed to get a plan in place that will work in the long term. Weight loss is a lifestyle change rather than just a short-term fix.
That's sometimes what the problem is. People will take something on a get a short-term gain and then take their foot off the accelerator a bit and fall back into old habits without realising and it's not long in until things are back to where they were. The other important thing here is that, 20 minutes a day in exercise really isn't much. And walking 20 minutes a day is probably not going to burn anywhere near enough kilojoules or calories to make a significant difference to weight.
Then we think that a little bit of exercise is going to fix everything when the reality is it's probably more likely we've got to get an hour or more of activity in four or five times a week to be serious about getting weight down. Low intensity exercise, while it might be safe, is not always going to be a successful strategy in the long-term for getting weight off.
So it'd be better to actually get a proper, informed exercise program and to get some individualised advice about what is safe to do and to progress the amount of exercise up to a level that will stimulate that weight loss. And these days, we can get access quite easily to expert physiologists who are really the most skilled people to give that sort of recommendation and advice.
Changing things up, changing exercise intensities, changing the volume, changing the time, changing the time of the day even, can get our bodies out of a comfort zone and help trigger some extra energy expenditure and raise metabolic rate and help with weight loss from that perspective.
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