London has made real progress in reducing new HIV diagnosis.

And that's because we know what works.

Be sure, know the four ways to prevent HIV.

One, test regularly and know your status.

Two, condoms can prevent HIV and other sexually transmitted infections.

Three, prep is a pill which can prevent HIV.

Four, undetectable.

Also known as U equals U.

Means people living with HIV on treatment cannot pass it on.

Be sure, know the four.

Visit doitlondon.org.

Our minds lie to us all the time about what will actually make us happy.

On the happiness lab podcast, Yale professor Dr. Laurie Santos explores evidence-based strategies to live with more joy.

And I'm not kidding, I listen to this podcast every time it comes out.

I drop everything and it truly has made me so much happier.

It's completely changed my life.

I am obsessed with her and with her episode, so you just need to listen to it.

She and experts hit the gym to flex their friendship muscles, unravel the mystery of why fear and pain can feel good,

and examine that you only live once philosophy, and why it doesn't work like you think.

Along the way, she's joined by guests like the grateful dead drummer Mickey Hart, and Star Trek's very own Wesley Crusher,

to bust the mystery-owned happiness.

Listen to the happiness lab wherever you get your podcasts.

...