"And three or four times a week is an average exercise rate to keep healthy and fit. The more you can get your heart rate up over the course of the day, or the week, the better. You want to get your heart pumping, as long as it's returning back to its normal resting rate."
So, we strapped MARC DEANIE to a heart monitor to test the theory during Scotland's Hampden heartache against Holland on Wednesday.
And he managed to top the exercise threshold FIVE times...
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Experts say the average adult heart beats around 72 at rest.
Staying within 60-100 is still healthy.
Just seeing David Marshall between the sticks nearly took me over that.
AFTER sinking to 65, Kenny Miller's deflected shot - his first sight at goal - sent me racing up to 90.
MOMENTS later, Scott Brown squandered an easy chance and I shot up to 101.
It didn't get much lower seconds later when Shaun Maloney and Paul Hartley ran into each other - gifting the ball to the Dutch.
I'M at 92 but Davie Weir's heart rate nearly went through the roof too when Stephen McManus gave him a hospital pass in the 12th minute.
IT was threatening to kick off in the middle of the park.
I stayed calm at 68 when Maloney hacked down Holland defender Gregory van der Wiel.
However, the pulse shot to 100 two minutes later when dirty Dutchman Robin Van Persie crunched Darren Fletcher.
I WAS 95 and laughing when Arjen Robben had a fresh air shot seconds later.
Somehow, there was no heart strain - even though he managed to get to the ball before Weir despite the gaffe.
HOLLAND'S second chance rocketed me to 102.
Thankfully, calamity keeper Marshall was making me eat my words, saving well from Robben.
I THOUGHT I'd reached a first half high, with 127, when Miller hit the bar on the half-hour mark.
HALF-TIME
THE break was spent coming down from the sitter's sky-high reading.
59 MINUTES
THE rest period was soon forgotten about when Dirk Kuyt got a free header.
Steven Whittaker was sleeping and I shot to 90 going mental at him.
63 MINUTES
70 MINUTES
80 MINUTES
A SHOCKING miss by
81 MINUTES
COMMONS' miss proved costly.
My heart sank six beats to 80 as dozy defender Weir headed his clearance to
85 MINUTES
SPEEDY Dutchman Elia left Weir paying to get back in the ground then Van der Vaart missed from six yards.
Now, all was lost and my heart had dropped like a stone to 78 as the match drew to a close.
