Of all the Kardashians, none is more protective of their privacy than Rob.
But for all his secretiveness, it's widely believed that one can generally get a pretty good sense of what's going on with Rob emotionally just by taking a room at the guy.
The theory goes that, like millions of Americans, Dream's father tends to neglect his physical well-being during times of emotional turmoil.
And so, when Rob gains a lot of weight in a short period time, it's often taken as an indication that he's undergoing some sort of profound distress.
Conversely, when Rob slims down, fans tend to assume that his mental health is on the upswing.
Obviously, the situation is not quite that simple, but since the Rob-barometer currently indicates a positive trend, we're gonna buy into the "shrinking waistline equals contentment and stability" formula, at least for the time being.
As you may have heard, Kim Kardashian celebrated her 39th birthday this week.
She documented much of the occasion on her Instagram Story, and fans were thrilled to catch a glimpse of the newly-slimmed-down Rob.
Now, it should be noted that the 32-year-old is still a bit of a recluse.
In fact, insiders say Rob has barely left his house in 2 years.
But apparently, he's been using his time away from the spotlight to focus on his health, because there's a whole lot less of Rob than the last time we saw him.
Yes, that's it.
That's all we got to see of the former sock magnate, but just from that ultra-brief cameo, you can tell that Rob has lost a considerable amount of weight,
Insiders have confirmed this observation, telling TMZ that Rob has dropped at least 20 pounds since his last public appearance.
This aligns with the Rob update, provided by his team back in June:
“Rob is taking on a new fitness challenge and has committed to working out six days a week for the next 30 days,” a source said at the time.
“He’s determined to lose a bunch of weight.
"He’ll be doing HIIT because it really helps burn fat and up your metabolism and that’s what Rob wants. His goals are realistic, he’s not expecting to have his six-pack back in one month but ultimately that’s his goal, he would love to have a six-pack again.”
The insider adds that Rob is committed to doing whatever it takes to get into peak physical condition:
“Rob’s already been back in the gym and eating healthy but he wants to take it up a notch and really transform his body, that’s why he’s doing this challenge,” the source explains.
“His family’s overjoyed to see him excited and motivated like this, he was stuck in a rut for so long but he’s embracing life again and they’re so happy.”
Obviously, all that diet and exercise has paid off.
But it seems the biggest change Rob has made is getting sober.
TMZ reports that Rob hasn't had a drink in several months, and he credits the decision to dry out with a slew of positive changes in his mental and physical health.
Whatever he's doing, it's working.
We wish Rob all the best in his continued efforts to get healthy.