A fitness trainer was lifting 270lbs within hours of giving birth has shared her top postpartum workout tips for mums who want to get their figure back.

In fact, Yanyah Milutinović, from New York, was in the gym herself the day before her son arrived into the world – doing 225lbs squats and 270lbs single leg presses in a two-hour workout.

Yanyah, 34, lives with her police officer husband Risel Martinez, 31, their three-year-old daughter, Smiljana and three-week-old son, Vuk.

The mum-of-two regularly shares fitness videos on her Instagram page, where she boasts over 325,000 followers – but often receives negative comments from trolls due to working out during both her pregnancies.

She hopes to encourage mums to keep training and weight lifting throughout pregnancy.

Yanyah has also shared a workout of seven exercises for fellow mums who want killer abs.

In a clip, the trainer performs a standing TVA or ‘belly bracing’, laying single leg lifts, lying pelvic tilt, the scared cat, lying single-leg toe taps, laying down heel touches and a bird dog.

Each exercise includes 15 reps in three sets.

The workout focuses on strengthening the pelvic floor muscles while gaining back core strength and, according to Yanyah, is much more gentle on the body – especially after labour.

She explained that ‘traditional' ab exercises such as crunches and sit-ups may not be suitable for women who have just given birth, as they can put too much stress on the back.

“These exercises are gentle and will not put too much stress on your recovery, allowing you to awaken your core along with your pelvic floor muscles, progressively regain your strength and recover quickly,” Yanyah told Jam Press.

“Not all ab exercises are suitable for postpartum moms.

“Traditional abdominal exercises, such as sit-ups and crunches, put too much stress on a postpartum tummy and back.

“Therefore, they are not recommended for new moms until the core is fully recovered.

“This can be a very frustrating time since many of us are eager to get that post-baby body back in shape.

“But it’s important to be patient and gentle while cautiously and effectively progressing the exercise program.”

The fitness trainer has previously received backlash for lifting 315lbs while being seven months pregnant – and critics insisted she was causing harm to her unborn child.

Yanyah said: “I got more than 200 terrible comments in my last three to four weeks of pregnancy and people were writing all these vile and disgusting remarks.

“But they have now all been quiet except one person who told me that I need to get in shape now and she tried to bodyshame my postpartum body.”

Yanyah aims to empower pregnant women and debunk common myths around weight training while expecting, and also help women get back to training after labour.

She added: “I hope that I empower women who are pregnant and weight train, or give knowledge to those who plan to be pregnant and want to weight train one day.

“I hope that I change the views on those who were willing to learn something new and operate only on miseducation or ignorance.

“I hope that if my daughter chooses to become a mother she doesn’t have to deal with discrimination while pregnant.

“Because I believe that even though this has to do with weightlifting now, I hope I can change views on how pregnant women are perceived overall.”