Five years on from living in lockdown, plenty of us can look back on new exercise and fitness regimes that got a little out of hand during the coronavirus pandemic.
Did you really need to message Joe Wicks on Instagram to tell him about your workouts? When did you last use that yoga mat and its companion blocks?
Don't worry. It was a time of extremes. Take Leo Atang, for instance, who doubled down on his interest in boxing to such an extent that he became the best youth heavyweight on the planet.
"I was around 10 or 11 when I first started but for those first two years I don't think my coach liked me at all and I don't blame him. I used to mess about, everything in any part of my life I didn't take seriously. I was the class clown of everything," Atang chuckled during the first of two conversations with The Sporting News as he makes his first steps as a highly-touted professional prospect.
"Boxing is one of those things where, if you do that, you're gonna get humbled very, very quickly. When I was 12, I decided to knuckle down and actually try. I had my first four fights, I lost my second and I lost my fourth fight. Then lockdown hit. From then, we worked all the way through lockdown. I was on FaceTime with my coach pretty much every day, training as if I had a fight coming up. When I came out of lockdown, boom, we just flew on from there."

Matchroom Boxing/Mark Robinson
The 18-year-old was keen to point out that he was "smashing a bit of Warzone and Call of Duty" on his console as well. But YouTube footage of greats, including Evander Holyfield and Andre Ward, also fed into his new boxing fixation.
Those early amateur defeats became a distant memory as Atang made waves higher up the age categories. Last year, he followed European Youth gold with a title at the World Boxing U19 Championship in Colorado. Atang secured his place on the top step of the podium with a first-round knockout of Lee Geon-hui.
Is Eddie Hearn Leo Atang's promoter?
As such, there was considerable interest when it came to persuading Atang to enter the professional code and Eddie Hearn's Matchroom got their man. Activity is now the name of the game for the York fighter, who takes on Cristian Uwaka in his second pro bout this Saturday, part of the Pat McCormack vs. Miguel Parra undercard in Sunderland.
Two months ago in Manchester, Bulgarian journeyman Milen Paunov joined Korea's Lee in the club of men stopped inside the opening session by Atang. It was a debut he relished, drinking in every moment before impressing with his speed and shot selection against an overmatched opponent, who was broken down by punishing body shots.
"I loved it from start to finish, the whole fight week. It was definitely different, I definitely felt the pressure but I embraced it. I'm buzzing with the outcome," he said. "There were things I need to work on but, for a debut, I was happy with it.
"I started finding the shots to the body fairly easily and that's when the child in me came out. I thought, 'yeah, I'll go straight on him here.'"

Matchroom Boxing/Mark Robinson
Not that it was all plain sailing, as Atang had the complication of carrying a hand injury into the fight — one old-pro experience ticked off nice and early.
"I had the injury in camp leading up to the fight," he explained. "I was warming up on the pads and shaking my hand a bit, so I had to get around that."
Atang expects to be firing on all cylinders against Uwaka this weekend after a fight week that hasn't had all the glitz of his debut. On the Wednesday before facing Paunov, the youngster attended Matchroom's branding relaunch in central London, where he was a guest of honour alongside British heavyweight greats Frank Bruno and Anthony Joshua.
MORE: Anthony Joshua explains boxing absence, fires defiant warning to heavyweight division
He doesn't hesitate to call Joshua his "childhood hero," and Hearn has predictably not been shy when labelling Atang as the next 'AJ'. After the unblemished Atang stood alongside two warriors of the sport for a photo opportunity heavy in its symbolism, Joshua proffered some apt advice.
"It was similar to when I spoke to most pros who've been in the game and seen it all," Atang said. "It was genuinely just to enjoy every moment of it, 'cause it's gonna go so fast. So don't be looking too far ahead, don't be looking too far behind or anything like that, just enjoy every single moment of it."
For now, the focus is on Uwaka, who will be aware that nights in the ring with Atang can go pretty fast, too. Expect his high-speed journey from lockdown obsession to the prize ring to keep gathering pace.