Gyms, swimming pools and indoor sports courts will be able to reopen from 31 August, Nicola Sturgeon has announced.
The first minister told Holyrood she was bringing forward the reopening of the facilities, which were previously expected to open in mid-September.
She said it meant people aged 12 and over could take part in non-contact activity in places such as dance and gymnastics studios.
Younger children will be able to take part in all activity.
The move follows increasing calls from across the sports and fitness industry to allow them to reopen safely.
More restrictions could be lifted on 14 September, she added.
This would see sports stadiums, theatres and live music venues reopened with social distancing, limits on capacity and enhanced hygiene.
Indoor contact sports for people aged 12 and over could also return.
And limits on numbers at weddings and funerals could be relaxed – though they would still be subject to some restrictions.
“However, I must stress these possible changes are at this stage indicative only,” Ms Sturgeon said.
“And given the volatility we face in transmission of the virus, there is a very real possibility that these plans will change.”
Ms Sturgeon also announced that police would be given powers to break up and disperse house parties.
In a statement ahead of First Minister’s Questions, she told the Scottish Parliament that 77 new cases of coronavirus had been recorded in the past 24 hours.
“This is the highest number of daily cases in three months,” she said.
Ms Sturgeon told MSPs that Scotland would remain in phase three of the lockdown easing process, and that this may not change at the next review in three weeks’ time.
For Scotland to move into phase four, she said ministers would have to be satisfied that “the virus is no longer considered a significant threat to public health”.
And she said the latest figures showed that “this is definitely not the case”.
The first minister said the government was not setting a date for the reopening of non-essential call centres and offices.
A full return to office working would significantly increase the risk of transmission, she warned.
“For now, working from home remains the default position,” she said.
The impact it would make on community transmission would make it difficult to keep schools open, Ms Sturgeon added.
“Our priority is to enable children to be safely back at school,” she said.