PureGym has recorded 1mln member workouts in the first week out of lockdown in England, which is similar to levels of the same week in 2019.
The gym operator has reopened 56% of its estate including 240 English clubs, ten of which are brand new openings and 40 sites in Switzerland.
READ: The Gym Group jogs higher as 2020 results better than feared
COVID-19 restrictions severely limited trading with gym closures resulting in 37% fewer trading days compared to 2019 and causing significant declines in revenue and profits.
Revenue tumbled 39% to £270mln while adjusted underlying earnings (EBITDA) crashed 92% to £11mln.
On Monday it reopened 40 venues in Switzerland while next week it will be the turn of sites in Scotland.
Gyms in Denmark, Wales and Northern Ireland are set to reopen in early May.
Shares in Hym Group PLC (LON:GYM) rose 1% to 240p on Wednesday afternoon.