practice is the key to timing.. once u've played enough u usually have a feel to time items.. but the truth of the matter is if the game is tuff and the oponent has more experiance its always important to know the exact time of Powerup spawns.. THEN the feeling fades away.. and u dont remain the lucky git u usually are :)

so well this is what i did to polish my timing skills ( they arent polished as yet :P )

all the digits in multiples of 5 are bold .. i use those as the base values to remember the numbers .. mainly multiples of 5 are easiest to remember.. and like the calculation gets so darn easy once u have actually practiced and have somewhat a feeling to this thing :)
and if u are a total newbie .. its nice to take a print of thsi and keep it while playing for reference.. u will get owned initially but then ud get good at timing :)

MEGA HEALTH TIMINGS

1--- 36
2--- 37
3--- 38
4--- 39
5--- 40
6--- 41
7--- 42
8--- 43
9--- 44
10--- 45
11--- 46
12--- 47
13--- 48
14--- 49
15--- 50
16--- 51
17--- 52
18--- 53
19--- 54
20--- 55
21--- 56
22--- 57
23--- 58
24--- 59
25--- 0
26--- 1
27--- 2
28--- 3
29--- 4
30--- 5
31--- 6
32--- 7
33--- 8
34--- 9
35--- 10
36--- 11
37--- 12
38--- 13
39--- 14
40--- 15
41--- 16
42--- 17
43--- 18
44--- 19
45--- 20
46--- 21
47--- 22
48--- 23
49--- 24
50--- 25
51--- 26
52--- 27
53--- 28
54--- 29
55--- 30
56--- 31
57--- 32
58--- 33
59--- 34
0--- 35