She revealed she completed three workouts in a day on Tuesday.
And Jessica Alba was back at it the following day as she headed to the gym once again, showing off her stylish attire as she was photographed outside a fitness studio in Los Angeles.
The Dark Angel star went makeup-free, wore calf-length black leggings and an oversize grey jacket layered over a black hoodie.
She carried her essentials in a Herschel hip pack.
Keeping her fans up-to-date with her progress the 36-year-old star shared snippets of her routine to Instagram as she worked up a sweat.
‘It ain’t cute but it gets those legs burning’ Jessica captioned a clip of her on one of the machines.
The actress appears to be determined to shed her baby weight after welcoming son Hayes two months ago, as well as get in tip-top shape for her new role on the Bad Boys spinoff.
Working out alongside Jessica on Wednesday was Gabrielle Union, her co-star in the upcoming project.
Jessica filmed the 45-year-old actress on a bike – and despite looking flawless herself – gushed: ‘I was feeling really good about myself until I saw this hottie come in here with all her fashions, and her abs and her dimples’.
The previous night Jessica filmed herself leaving her third workout that day and shared a clip of her walking with a pal saying: ‘Really proud of us today, I did three workouts, you did two’
The 36-year-old mother-of-three looked flawless makeup-free in a ponytail.
‘Ponytail’s a mess, I’m hot,’ the Sin City star added.
She also shared a couple of group photos to her Instagram after her last workout.
‘3rd workout of the day for me -man it was hard, but oh so good- thanks @nichelle for the motivation and for my friends #teamworkmakesthedreamwork @kellysawyer @derekblasberg @casdelta love you guys!’ Jessica captioned a group photo.
Earlier in the day Jessica shared an adorable photo of baby Hayes captioning: ‘Someone is getting real big!’
The Into The Blue actress and her husband, Pair of Thieves sock designer Cash Warren, are also proud parents of nine-year-old daughter Honor and six-year-old daughter Haven.
The married couple of nine years originally met on the set of Fantastic Four way back in 2004.
Meanwhile Jessica announced last week that she is going to be on a TV adaptation of the film Bad Boys alongside her friend Gabrielle Union, who appeared alongside Will Smith and Martin Lawrence in 2003’s Bad Boys 2 as DEA agent Syd Burnett.
TV Line reports that Jessica is set to play Army veteran-turned-investigator Nancy McKenna, who has two stepchildren.
She will also be an executive producer on the program alongside Jerry Bruckheimer, who was an executive producer on the original films with the late Don Simpson