Personalized training, nutrition, and accountability — engineered by King Seidorb. A 16-week system designed to take you from "trying" to undeniable.
/ The promise
16 weeks. One coach.
A version of you that won't be denied.
16
/ About King
King Seidorb has spent over a decade studying — and producing — physical transformations. Athletes, executives, postpartum rebuilders, lifelong "skinny guys", and people who'd written their bodies off.
Next Level Body Lab is the system he wishes he'd had as a client. Programming that adapts. Nutrition that respects your life. A coach who answers. And a dashboard that turns the chaos of "getting in shape" into a daily clear next step.
No gimmicks. No 30-day miracles. No supplements you'll have to buy from him.Just the kind of programming that, when you follow it, makes your old self look like a rough draft.
1,200+
Bodies transformed
10 yrs
Coaching
98%
Finish rate
/ The 16-week system
Every program follows the same architecture — but every block, every meal, every rep target is dialed to you.
01
Weeks 1–4
Movement quality, baseline metrics, and the habits that make every future block work. We fix what's leaking before we add load.
02
Weeks 5–10
Hypertrophy programming dialed to your leverages. Compound strength + targeted accessory work — the size phase that doesn't smoke your joints.
03
Weeks 11–14
Strategic conditioning + macro pivots to reveal the muscle you just built. Cardio that doesn't kill performance.
04
Weeks 15–16
Final polish. Photo-ready protocols, lifestyle plug-ins, and a maintenance plan so the work sticks long after week 16.
/ Why it works
Generic plans break the moment life happens. Next Level Body Lab is engineered for what you actually do — with a coach who adjusts in real time and a dashboard that keeps you on track even on the bad weeks.
Hypertrophy, fat loss, rehab, performance — every program is engineered around your single most important outcome.
Workouts auto-scheduled to your calendar. M/W/F splits, drag-drop tweaks, interval timer built in.
Custom meal plans with macro targets, swap-friendly food library, and weekly check-ins.
Direct messaging with King. 24h replies on Pro, 8h on Elite. Form-check videos, weekly feedback.
Streaks, photo timeline, weight & strength charts. Proof of work, not vibes.
No crash cuts, no bro-science. Programs you can actually run again next year.
/ Receipts
"I'd been stuck for two years. Eight weeks in and I'm hitting numbers I never thought my body could. The plan is personal — it actually fits the way I live."
Marcus T.
Lost 38 lbs · Gained back-squat 90 lbs
"King didn't just give me workouts. He gave me back my confidence. Every check-in moved me forward, and the nutrition piece finally clicked."
Jasmine R.
Postpartum rebuild · 16 weeks
"Coach is locked in. Programming is sharp, the feedback is honest, and the dashboard makes everything trackable. I trust this system completely."
Devon K.
Bodybuilding prep · 6-month transformation
/ Pricing
Start with a 7-day free trial. Pay monthly through PayPal. Cancel any time, no penalty — the bodies that last are built on choice, not contracts.
/ Programming + direction
/ month · PayPal
/ The full transformation engine
/ month · PayPal
/ 1-on-1 with King
/ month · PayPal
7-day free trial · No card required · PayPal billing after trial
/ Apply
Drop your details and King will personally review your fit within 24 hours. No spam, no auto-replies — just a real conversation about whether Next Level Body Lab is right for you.
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