Your question is a little misguided, because if you read the Livestrong article carefully:
Those who fidget more by shaking their leg, repositioning themselves, standing up and walking around, and so forth can burn 350 more calories per day than their more sedentary counterparts, according to Levine at U.S. News & World Report.
Standing up and walking isn't really considered fidgeting, so yes, the subjects consumed up to 350 kcal/day more, but not by wiggling their feet or rocking a pen (the definition of fidgeting).
As a comparison, let's compare how many calories I'd burn sitting down vs standing using this online calculator:
- If Standing while working: 1496 kcal burned
- If Sitting while working: 1152 kcal burned
- Calorie-burn increase: 344 kcal
So just standing all day would give the desired number of calories. Imagine if I'd fidgeted while standing! Or even better, use any of these devices:
Which would seriously boost your calories compared to just sitting down.
Interestingly, the author of the study (dr. J. Levine) about Non-Exercise Activity Thermogenesis (NEAT) was interviewed by USA Today and they included the following picture:
In the interview he gives some solid advice:
We need to move more throughout the day. The key is to find what you
Simple examples include a quick walk around the block before your
morning shower; a 30-minute walk at lunch; having a couple of
walk-and-talk meetings during the day (research shows you'll think
better); pacing when you're talking on the phone; taking a 15-minute
catch-up walk after work with your partner; walking with your children
and listening to their music with them; doing some active volunteering
such as taking a stressed mom's children out for a walk or bringing a
meal to an elderly person.
If you incorporate some of these ideas into your day, you burn an
extra 500 to 1,000 calories.
He goes on to answer your actual question:
Q: Does fidgeting promote weight loss?
A: In terms of calorie burn or weight loss, fidgeting doesn't help
you. The research we conducted demonstrated that the secret to burning
fat was to get up, move and walk. We found that people can increase
their NEAT by 800 calories a day and resist gaining weight, even when
they eat too much. At first the world's press mistook NEAT for being a
fidgeting phenomenon, but we pointed out that you would never be able
to fidget enough to burn 800 calories a day.
Fidgeting is your body's way of telling you to get up and move. Our
body wants to move, but the environment suppresses it.
So to conclude: no fidgeting is not enough. If you really want to burn some calories, you need to get off your ass and get some work done. With Fitness, there's no such thing as a free lunch!