???

After sitting down and having a bit of a redo of my
weekly training (on paper), i have 3 longish easy
runs, 3 interval sessions and a couple of cycling
sessions. I'm just wondering if 3 interval sessions
is too much in a week? Also during each week, there
is a session of the Masters which includes a race or two
for me and also intervals (my choice) to round out the
evening. In my interval sessions i will be trying to
cover all the bases. One will be just short sprints like
say 10 x 150m (completed after Masters races).
Another will be say 5 x 400m and another 2 or 3 x 1km.
The last one which i now doon Sunday afternoon/evenings
is the 3 x grandstand steps/400m at the track. (It actually
makes 4 sessions). My question is - am i doing too many
interval sessions? Should my long easy runs be at least
75% of my training? I am mostly a sprinter though but
i'm trying the longer stuff out pretty much for the first
time in my life.