Per ESPN's Brian Windhorst, it's to treat anxiety.
Lue had many anxious when he stepped down as head coach for a couple of weeks to deal with health issues.
Lue said he was dealing with chest pain and was occasionally coughing up blood as a result of the stress and anxiety of the season.
"I'm glad it wasn't anything serious", Lue told ESPN's Rachel Nichols. There were a few games in which he was unable to coach in the second half. He changed his medications and diet in the wake of the health scare and has had no reported issues since. "No more chest pains, so everything's been great".
Lue took a medical leave of absence in March, after being forced to leave the bench on several occasions during the season.
The time away was long overdue for the 41-year-old, who told ESPN that he "had a chance to focus on me" for the first time in a 20-year National Basketball Association career that began as the 23rd pick in the 1998 draft.
"It's something I can look back on and think, 'I've been through something worse than this".
"I did have some chest pains for the last couple of years", Lue told Nichols. So the two weeks I took off, just finally had a chance to focus on myself and change my diet.
"Hired a chef. Stopped drinking as many Shirley Temples", he said.
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Hill was unable to get a shot off in time and the game went to overtime. "I'm not anxious about my makes or misses". Kevin Durant added 26 points , Klay Thompson had 20 and JaVale McGee added 12 to spark the Warriors.
The Cavs have 48 hours to get their head back into the game because Game 2 now becomes a must-win. "So I do feel great, though".
The 41-year-old Lue missed nine games to address his health problems.
He said he was also able to rest, which helped him recharge.
"A lot of people are going through a lot of different things", Lue said Thursday at Oracle Arena.
Kerr said he spoke by phone and traded text messages with Lue.
"I think when you're going through a tough season, tough stretch, it's easy to say you're going to bow out". Best team in the league, some of the best players, most accomplished players want me on their team and want what I do, what I bring to the table. "It was tough", Lue told Nichols.
"I don't like the attention". It was pretty cool, you know what I'm saying? And I didn't want to be that guy.