Teenager looking for tips and constructive criticism!

[d3eathly]

Hey guys new to this forum here but after looking through some topics it's evident that you guys have a great resourceful community here! I was just looking for some advice and comments from a wider range of people other than just my group of peers and hoping to build on your guys' advice and stuff. Here are my stats right now...
(As of December 15, 2011)
Name: Erick
Age:16
Height:5'5
Weight: 113-115 lbs
Body fat percentage: 4.2%
A few of my lifting statistics (maxes)..
Bench:145 lbs
Power Clean: 135 lbs
Squats: 275 lbs
40 yd.: 4.9
Vertical: 30"
Agility (cones): 4.9
Some track stats (this was from last spring season, have gotten stronger and faster etc since then): 100m: 12.8, 200m:26.5, 400m: 58
There! I may be a somewhat small guy but I'm determined to get stronger and faster and show everyone whats up haha. I'll accept all tips and constructive criticism. My training regiment per week is at the least 4 times a week, I take a weight training class at school where we lift for 90 mins a period either twice or three times a week and my apartment has a nice gym with dumbells and treadmills and other machines but no free weights (for flat bar bench or squats etc.)
EDIT: Oh and i take my vitamins everyday and the only supplement I use is N.O Xplode 2.0 one scoop per workout. I down about 64-80 fl oz. of water a day

[Alex.V]

Welcome, bud. So.... what are you trying to do?


ps-

Body fat percentage: 4.2%

Doubt that.

[d3eathly]

Hey! I'm just trying to improve my strength and explosiveness for track so I can hopefully be fast or jump high enough for a varsity spot. And about that body far percentage it wasn't a very precise one but my weight training teacher did it for the whole class he had like a clamp type object that he'd squeeze your skin with and it recorded a number and he did that on around 8 spots and calculated the numbers in an equation on his computer and that's what he came up with for me. I believe it's somewhere around there give or take a percentage cause I am pretty small (113 lbs as of now)

[thecityalive]

Squat. I was a varsity 200m, 400m, 4x2, 4x4 (anchor) runner in HS and in University. Squat...get powerful and reap the benefits.

[razorcut]

Some track stats (this was from last spring season, have gotten stronger and faster etc since then): 100m: 12.8, 200m:26.5, 400m: 58

Love the track stats. I was a 400/800m guy in HS (and 800m in college briefly until my ACL exploded). Wish I had discovered the weights back then. I didn't start lifting until my post-track days. As mentioned by cityalive, squats will serve you well. Don't neglect the upper body though as it's also important in those sprints. Best of luck.