Sargeant is the first American driver to race in F1 since Alexander Rossi's stint in 2015, and he is determined to grab the bull by the horns.
"I'm doing my best to enjoy every part of this process because I know how much of a challenge this year is going to be, to make the step up in physicality that an F1 car demands, but this is what I've been working towards for years," Sargeant wrote in a pre-season blog on Williams' website.
"I have to make sure I can be in the best shape possible and I have huge motivation to work really hard towards that.
"At this stage of the year, under two months out from Bahrain, I'm working to keep my body in a good condition generally and maintain my overall strength.
"We're also working really hard on cardio; doing a lot of running and high-intensity workouts.
"Then, as you can imagine, we're doing a lot of neck and core work as those two are connected and continuing to strengthen those up for the Gs that are coming.
"Now the date for our 2023 Season Launch has been announced, I'm super excited, even though I feel like my season has already started!"
Sargeant, who drove in F2 last season, will have three US F1 Grands Prix to look forward to in 2023, including one in his home state of Florida.