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"Did they cut more calories from their diet ... or did they become more physically active?" asked study author Kevin Hall   a senior investigator with the National Institute of Diabetes and Digestive and Kidney Diseases.
 Hall  had been "puzzled by how quickly the contestants were losing weight." So he contacted the show's physician and began studying the season eight contestants.
Early on   Hall  observed that weight loss was better predicted by food intake  not physical activity alone. But in the long term  the opposite was true.
"You have to be very physically active in order to keep the weight off  " Hall  said.
 Hall 's findings echo previous studies that promote more exercise for long-term weight loss maintenance. However  experts caution that doesn't mean people can neglect their diets in the long run  either.
This method  however  was not able to tell how much of the physical activity was due to normal daily activities -- like cleaning the house or walking the dog -- versus following a workout plan   Hall  said.
Six years later  however  the contestants' resting metabolisms still hadn't sped back up   Hall  showed in a study last year.
For  Hall   metabolic changes are just one part of the puzzle. Genetics may also play a role  as well as social factors that can make it hard for some people to incorporate so much exercise in their daily lives.
 Hall  added that it's not necessarily those who were most physically active during the competition who kept it up six years later.
How some 'Biggest Losers' keep the weight off

Carrie Fisher  did more than reprise  her  role as General Leia Organa in the newest installment of the Star Wars franchise.
Before  her  death at age 60 last year   she  brought  her  own wit and humor with  her  into The Last Jedi â and director Rian Johnson was all about it. He included some one-liners that have that characteristic  Fisher  bite  which  she  wrote  herself .
In an interview with PEOPLE  Johnson credited  Fisher  with at least two quippy lines. The first was a line about  her  new hairstyle  she  makes to Mark Hamill's character  Luke Skywalker.
âThat was  her  â Johnson said. âThat was  a Carrie Fisher line . Of course  it  was.â
The second was a scene with actress Laura Dern  who plays Vice Admiral Holdo.  Fisher  tells her  "You go  Iâve said it enough " as the two trip over each other's words when saying the iconic line  "May the Force be with youâ at the same time.
Johnson also talked about the process of working with  Fisher . "After an hour  I would have filled up pages and pages writing down the notes and one-liners that she would pitch â he said. âAnd so we tried to work them in whenever we could.â
The zingers carry a bit more emotional gravity considering  Fisher  died almost a year ago following a heart attack. The film also plays tribute to the late actress  finishing with the note  âIn loving memory of our princess  Carrie Fisher.â
Carrie Fisher wrote some of her own lines in 'Star Wars: The Last Jedi'

CLOSE SportsPulse: USA TODAY Sports' Sam Amick and AJ Neuharth-Keusch break down the drama between LeBron James and the New York Knicks. USA TODAY Sports
On one side of the NBA ledger  the 11-3 defending champions have won seven consecutive games by an average of 19.8 points while boasting the leagueâs best offense (116.2 points scored per 100 possessions) and the 7th-best defense (101.8 points allowed per 100). On the other  where the revamped Cavaliers have been working in seven new players while waiting for new point guard Isaiah Thomas to recover from his hip injury and make his debut  the 7-7 Cavs have been the leagueâs worst defensive squad by a long shot (111.1 points allowed per 100; Dallas is 29th at 108.7) while leaning ever-so heavily on LeBron James.
Cleveland Cavaliers forward LeBron James (23  right) defends against Golden State Warriors forward Draymond Green (23) during the fourth quarter in game four of the 2017 NBA Finals at Quicken Loans Arena. (Photo: Kyle Terada-USA TODAY Sports)
A: âTo a certain extent yes. And to a certain extent  no. I don't think anyone should be panicking 12 games in  or 13 games in. However  there are some glaring concerns with them. And at the same time  you're missing a 30-point (per game) player (in Thomas) on the bench who's hurt. So my concern would be that  LeBron  is playing so many minutes right now (James  in  his  15th season  is leading the league in minutes at 38.1 per game; itâs his highest mark since the 2010-11 season).
âYeah  he's super human but eventually his super human powers go away  so that would be more of my concern if I'm a Cavs fan or somebody with the Cavs or a player  is like 'Man  he's been playing a lot of 40 minute (nights) and it's only Nov. 12.' But I wouldn't be pressing the panic button just yet. At the end of the day  they know how to win. They've got a guy who knows how to win  so I wouldn't necessarily press the panic button. I would see certain things and I would panic about those certain things  just becauseâ¦I don't think nobody should be playing 40 minutes a game in November ( James  has played 40-plus minutes in six of  his  14 games).

Draymond Green: Cavs should be concerned about LeBron's minutes

