Federica Gianni said you should start with 15-20 minutes three times a week (Image: Alistair Berg/Digital Vision/Getty Images) A personal trainer has revealed how you can introduce walking into your routine to shed "stubborn abdominal fat" and the best times to head out this summer. Walking is an "overlooked" form of exercise that can help you build stamina, burn calories and boost your heart health , but it's not necessary to walk for hours, according to the NHS . Personal trainer Federica Gianni reiterated this to Bella magazine, explaining that 15-20 minutes a week is sufficient to get you started, and you can walk at certain times of the day to beat the heat .

Federica said: "If you've got stubborn abdominal fat, especially if you're over 40, then walking can help reduce this, as well as help insulin sensitivity and lower Type 2 diabetes risk." function loadOvpScript(){let el=document.createElement('script');el.

setAttribute('src','https://live.primis.tech/live/liveView.

php?s=114945&playerApiId=v114945');document.getElementById('ovp-primis').appendChild(el)}window.

top.addEventListener('primisPlayerInit',e=>{try{if(e.detail&&e.

detail.playerApiId==="v114945"){if(window.document.

getElementsByClassName('jwplayer')[0]){e.detail.float('disable')}}}catch(e){}});window.

addEventListener('DOMContentLoaded',()=>{setTimeout(()=>{if(typeof flagTcfLoaded!=='undefined'&&flagTcfLoaded===!0){loadOvpScript()ExpressApp.Log('[Load] OVP flagTcfLoaded',new Date())}else{document.addEventListener.