When we talk about how movies used to be made, it was over 100 years of film, literal, physical film, with emulsion, that we would expose to light and we would get pictures.

I wanted to do something in film. I wanted to make my own movies. Something clicked in my brain, like, 'Oh, I can physically act! I can go on open casting calls and audition for something.'

I was a pretty fit and physical kid, and my first interest was in martial arts and kung fu with all the Bruce Lee movies.

I work out every morning for an hour while in front of the news channel or business channels, then I'll ride for four, five hours a day. So I'm on the move all the time, and I think that's the key. A body in motion tends to stay in motion. That's the law of physics.

I feel a lot healthier when I'm having sex. Physically. I feel all these jitters when I wake up in the morning. Just energy jitters. I take vitamins, I work out every day. When I'm having sex, I don't have that.

Under the pressure of the cares and sorrows of our mortal condition, men have at all times, and in all countries, called in some physical aid to their moral consolations - wine, beer, opium, brandy, or tobacco.

Don't get caught up in the 'look' thing. Sometimes, we as men and women, the first thing that attracts us to someone is their physical appearance, and that's not always a good thing because what's good on the outside is not always good on the inside.

Ergonomists are not physicians - they are engineers - and their medical theories are controversial. Some of the world's leading medical researchers deny that repetitive motion causes injury.

But for me, a physician, chief medical correspondent for a major network, and women's health expert, the thought of exposing myself to millions of people as someone who'd been completely blindsided by the suicide of my children's father, and by the impact of that suicide on Alex and Chloe and me, was nothing short of terrifying.

We're giving consumers the tools they need to see medical professionals virtually, to Skype with the doctor instead of wait in her office, to self-monitor vital signs, to connect with health-related communities, and to choose physicians based on reliable data about outcomes and cost.

In 2009, UnitedHealth, a leading insurance company, paid $350 million to settle lawsuits brought by the American Medical Association and other physician groups for shortchanging consumers and physicians for medical services outside its preferred network.

Countless hours of physical therapy - and the talents of the medical community - have brought me new movement in my right arm. It's fractional progress, and it took a long time, but my arm moves when I tell it to.

I am a medical scientist, not a practical physician.

You don't train someone for all of those years of medical school and residency, particularly people who want to help others optimize their physical and psychological health, and then have them run a claims-processing operation for insurance companies.

Medicare is a monopoly: a central-planning bureaucracy grafted onto American health care. It exercises a stranglehold on the health care of all Americans over 65, and on the medical practices of almost all physicians. Medicare decides what is legitimate and what is not: which prices may be charged and which services may be rendered.

Making personalized medicine a reality will require a strong partnership between 23andMe and the physician and medical communities.

I am a medical scientist, not a practical physician. I think it's very upfront. I am a doctor. I have long experience with heart disease.

After I read all the medical journals and watched all the documentaries, I still didn't understand the physical sensation of ticking and where it comes from and what it feels like.

The growth of technology is such that it is not possible today for a nuclear physicist to switch into medical physics without training. The field is now much more technical. More training is needed to do the job.

There are now over 5,000 medical physicists in the U.S more than 50 times the number in 1958.

When I entered medical physics in 1958 there were fewer than 100 in the U.S. and I could see many opportunities to apply my knowledge of nuclear physics.

I have devoted much time and energy to helping medical physics in developing countries.

I am sure that I have been much more useful to society as a medical physicist.

I was the Chair of the first department of medical physics in a medical school in the U.S.