Given a document, generate a short title of the document. The title should convey the main idea/event/topic about which the document is being written. Note that URLs in the text have been replaced with [Link].

Q: When I first heard about the 7-Minute Workout  an app that promises the benefits of a sweaty bike ride and a trip to the gym in just a few minutes  I thought it was all hype. But as it turns out  the app  well  works you out. I tried it for the first time last year  and I'm still hooked  so I recently got in touch with  Chris Jordan   the director of exercise physiology at the Johnson & Johnson Human Performance Institute and the person behind the Johnson & Johnson Official 7 Minute Workout  to get some insight into how it works. For me  the app is perfect for weekends  or when I can't make it to a yoga class  or as something fun to do with a friend at home. View As: One Page Slides
It consists of 72 exercises like jumping jacks  sit-ups  and push-ups. Ten require nothing but your body  and for others  you'll need a chair that can support your weight. The latest version of the app lets you do each exercise along with  Jordan .
The idea of a workout you can do in minutes was originally envisioned by  Jordan   an exercise physiologist. Here is personal trainer and study partner  Brett Klika  demonstrating one of the workouts. Sources: American College of Sports Medicine's Health & Fitness Journal  YouTube
The concept behind the workout is interval training â short  intense periods of exercise broken up by brief periods of rest.  Jordan  told me  he  based the workout on  his  experience as a fitness consultant for the US Air Force in Europe. Sources: International Journal of Cardiology  ACSM's Health & Fitness Journal  Sports Medicine
The approach is less time-consuming than a traditional workout  but studies suggest it may be more beneficial for building muscle and protecting the heart. "High-intensity interval training can provide similar or greater benefits in less time than traditional longer  moderate-intensity workouts  " Jordan  said. Sources: International Journal of Cardiology  Medicine & Science in Sports & Exercise

A: Does the 7
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Q: The move led to the appointment of a special counsel in May 2017  a development that continues to infuriate the President. While  Trump  often directed that anger at Sessions  by June  he  turned  his  ire to Mueller and wanted the special counsel fired  a source confirmed to CNN after it was first reported in The New York Times. White House counsel Don McGahn refused to order the Justice Department to fire Mueller  the source said  because he disagreed with the President's reasoning.
 Trump  appeared in good spirits Friday morning as  he  prepared to deliver remarks in Davos  a source who spent time with  Trump  behind the scenes said. There was no sign that  he  was perturbed by reports about  his  move to fire Mueller  this person said  and  Trump  didn't bring up the topic.
But ever since a special counsel was named  the President's frustrations have continued to simmer.  Trump  has come to view Rosenstein as one-in-the-same as Mueller -- another government official who is out to get the President  one source said.
Sources described  Trump 's frustration with Rosenstein as largely bluster.
In explaining his urge to fire Mueller  The Times  citing two people  said the President said there was a conflict of interest based on Mueller's dispute with one of his golf clubs over fees  the fact that Mueller worked at  the same law firm that was representing Trump's son-in-law Jared Kushner   and that Mueller interviewed for the FBI director position the day before he was named special counsel. A source tells CNN another reason  Trump  wanted to fire Mueller was  his  perception that Mueller was close friends with Comey. The two men are professional acquaintances.
As for McGahn   he  was already prone to becoming frustrated with the President and had threatened to quit over different issues  including  Trump 's choice of lawyers to defend the President and White House  according to a source familiar with the situation. But the pressure in June to fire Mueller caused McGahn to tell others  he  would resign  and this time  he  packed up some of  his  belongings in boxes  according to two people familiar with the matter.
Before the news broke Thursday  those who have worked closely with McGahn in recent weeks said they believe  he 's committed to staying at the White House. But  his  fate could depend on how Trump reacts upon  his  return to Washington.

A: Trump turns Russia frustration to Rosenstein
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Q: The one upside was that  a British cyber-security researcher  Marcus Hutchins   managed to trigger a "kill switch"  halting the attack prematurely. More on  him  in a bit...
 August: From hero to hounded
Marcus Hutchins  never wanted to be exposed as the "Wannacry hack hero" and  his  name only became public after British newspapers revealed  him  to be cyber-security blogger Malware Tech against  his  will.
The US accused  him  of having developed banking malware several years ago and of selling it on dark web forums - charges Mr Hutchins denies.

A:
Tech 2017: BBC News Online's biggest technology stories
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