I think it's more of a psychological feel-good factor - Since you are up before 99.99% of the world, you want to maintain the lead, so that spurs you on to work fast.

我认为这是一种感觉良好的心理因素——既然你比世界上99.99%的人起得早，你想保持领先，所以激励你快速工作。

youdao

Naughton's plan was simple: maintain a caloric intake of 2000 calories per day while eating only fast food (and a couple of "Carb Options" snack bars.)

诺顿的计划很简单：每天保持2000卡路里的热量摄入量，并且只吃快餐(还可以吃“碳水化合物食品组合”等快餐)。

youdao

On runs when you're feeling good and fluid, finish up the last 5 to 10 minutes at a "comfortably fast" pace, about the pace you could maintain for 30 to 60 minutes.

当你的跑步感觉舒服流畅，最后5 - 10分钟以“舒服的加速”的配速进行，也就是你能坚持30 - 60分钟左右的配速。

youdao

China has also struggled to maintain a fast pace of growth, but keep prices of consumer goods and property affordable.

BBC: NPC: China keeps growth target at 7.5%

To maintain such a fast pace, Quenneville divvies out playing time more equitably than most coaches do.

WSJ: How the Chicago Blackhawks Became Unbeatable

Ms. WANG: I hope that China can maintain a very fast development in economy, so that, you know, I and my husband can live a better life...

NPR: Chengdu Youths Discuss Life in China