Athletes have been slamming Olympic organisers, with concerns about subzero temperatures and quarantine rules flooding in.
The Winter Games in Beijing began four days ago with the promise of being "streamlined, safe, and splendid."
Some have praised China's efforts to keep the Games virus-free.
Some participants, however, claim to be living and training in deplorable conditions, forcing them to petition organisers for changes.
After Swedish skier Frida Karlsson was spotted shaking and near to collapsing at the end of the women's 7.5km+7.5km skiathlon on Saturday, the Swedish delegation urged for cross-country skiing events to be scheduled earlier in the day to safeguard athletes from frigid conditions.
Competitions are prohibited by the International Ski Federation when temperatures drop below -20 degrees Celsius (-4F).
When Karlsson competed on Saturday, the temperature was -13 degrees Celsius, but Swedish team manager Anders Bystroem informed reporters that the temperature was closer to -31 degrees Celsius with the wind chill included in.
"We have the cold limits, but I do not know if they also measure the wind effect," Mr Bystroem told Reuters news agency on Sunday.
'I'm not sure I can handle [it]'
A handful of Covid-19 cases have been recorded at the Games, including athletes and team officials, with frustration mounting over the lack of clarity about Covid isolation restrictions.
China has gone to tremendous measures to keep the virus at bay, banning international spectators and forbidding the general public from purchasing tickets. The media, athletes, and observers are separated into "bubble areas," with the rules stating that anyone accessing these areas must be fully vaccinated or face a 21-day quarantine.
Those with symptoms will be sent to a designated hospital, while those who are asymptomatic will be kept in an isolation facility, according to Chinese regulations.
Those who have been infected will be maintained in isolation until they have tested negative twice within 24 hours. They will then be released to re-enter the bubble.
Kim Meylemans, a Belgian skeleton racer, posted a sorrowful Instagram account earlier this week, stating that she had been moved from one isolation facility to another.
"We are not even sure I will ever be allowed to return to the [Olympic] village," she said in a video. "I'm not sure I can handle 14 more days and the Olympic competition while being in this isolation."
The IOC later said in a statement that she would be given a room in the Olympic Village and that it stood "ready to support [her]".
Natalia Maliszewska, a Polish speedskater, also claimed she was abruptly released from quarantine the night before a qualifying race, only to be reassigned hours before the race due to a positive Covid test.
"I don't believe in anything any more. In no tests. No games. It's a big joke for me," she wrote on Twitter in Polish, according to one translation.
Separately, Russian biathlete Valeria Vasnetsova showed her dissatisfaction with the food served in isolation by uploading a photo on Instagram showing "breakfast, lunch, and dinner for five days already."
Despite the fact that her profile is set to private, the image of the dinner - basic pasta, potatoes, charred beef on a bone, and no vegetables - was shared on social media.
The BBC was unable to independently verify these statements.
Kit McConnell, the sports director of the International Olympic Committee (IOC), told reporters on Monday that the isolation conditions of athletes were a key priority, and that steps were being taken to alleviate "individual circumstances which are still challenging."
Others, meanwhile, have complimented China's diligent efforts to assure a virus-free games, which include extensive cleaning of sleep pods between users, constant disinfectant spraying, and the use of robots in kitchens and bars to prepare and distribute food.