Check out yesterday's Cleveland-Orlando:
Before the game started: The line was on 189.5 (and some bookies had it on 190.5)
1st quarter: 63 points
2nd quarter: 54 points
Halftime: The bookies (at least William Hill and Bet365) had the line on 211.5
Look what happens now:
3rd quarter: 39 points
4th quarter: 39 points
Total points in the 1st half: 117
Total points in the 2nd half: 78 (like a European Baksetball Match)
You should take advantage of it because if you bet in-live then you get over/under much better than the original line:

I got one of my biggest winnings here: £850.00 (approx $1,400 USD)
Please note: The original line isn't a constant factor, but it is a big indicator and sometimes line can be 180 and in-live it goes to 210 which is good to try and vice versa.
Before the game started: The line was on 189.5 (and some bookies had it on 190.5)
1st quarter: 63 points
2nd quarter: 54 points
Halftime: The bookies (at least William Hill and Bet365) had the line on 211.5
Look what happens now:
3rd quarter: 39 points
4th quarter: 39 points
Total points in the 1st half: 117
Total points in the 2nd half: 78 (like a European Baksetball Match)
You should take advantage of it because if you bet in-live then you get over/under much better than the original line:

I got one of my biggest winnings here: £850.00 (approx $1,400 USD)
Please note: The original line isn't a constant factor, but it is a big indicator and sometimes line can be 180 and in-live it goes to 210 which is good to try and vice versa.