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X Series Nighttime Formula
Unwind • Rest • Recover
Shipping Availability: Not available for shipping to Utah or Alabama.
RESTˣ is Steel’s X Series nighttime formula, developed for the transition from demanding days to a deliberate evening wind-down.
Built around the RESTˣ Complex, its formulation centers on nighttime relaxation, with magnesium and vitamin B6 providing additional nutritional support.
Work, training, and everyday responsibilities all compete for your attention. RESTˣ puts the evening routine in focus: finish the day, create space to unwind, and give rest a place in the plan.
Recovery deserves the same attention as performance.
Product Name: RESTˣ
Series: Steel X Series
Product Type: Powdered nighttime formula
Serving Size: 1 scoop (4.5 grams)
Servings Per Container: 30
Featured Complex: RESTˣ Complex
Complex Amount Per Serving: 3 grams
Primary Focus: Nighttime relaxation and recovery planning
Per One-Scoop Serving:
Vitamin B6 (as Pyridoxine HCl): 1.7 mg / 100% Daily Value
Magnesium (as Magnesium L-Threonate): 40 mg / 10% Daily Value
RESTˣ Complex: 3 g
RESTˣ Complex:
Gamma-Aminobutyric Acid (GABA), 4-Amino-3-phenylbutyric Acid, and N-Ethyl-L-Glutamine (L-Theanine).
RESTˣ gives nighttime supplementation a defined purpose within the Steel system.
The RESTˣ Complex is formulated around relaxation. Magnesium L-Threonate and vitamin B6 complement that approach with nutritional support for normal nervous-system function.
The objective is an evening routine that makes room for rest after the demands of work and training.
Steel’s daytime products address different training, energy, and nutrition goals. RESTˣ occupies a separate nighttime category.
It does not need an elaborate stack. Its place is within a broader routine that includes adequate food, appropriate training, and enough time for sleep.
RESTˣ, RESTED, And VOSTOK
Choose one appropriate nighttime or calming product.
Do not combine RESTˣ with RESTED or VOSTOK.
RESTˣ Complex
3 grams per labeled serving
The complex brings together ingredients selected for the formula’s nighttime-relaxation objective.
GABA: Relaxation-Focused Component
GABA is involved in the nervous system’s inhibitory signaling—the processes that help regulate neural activity.
Its inclusion reflects RESTˣ’s focus on relaxation and the transition toward bedtime.
4-Amino-3-phenylbutyric Acid: Calming Component
This ingredient acts on GABA-related signaling and contributes to the formula’s calming effects.
It is a central part of the nighttime formulation.
L-Theanine: Evening Wind-Down
L-Theanine is an amino acid found in tea and studied in human research involving relaxation, stress responses, and aspects of sleep.
Steel includes it to complement the complex’s evening wind-down focus.
Magnesium L-Threonate: Nervous-System Support
Providing 40 mg of elemental magnesium per serving
Magnesium supports normal nerve and muscle function and participates in numerous metabolic processes.
Magnesium L-Threonate has attracted research interest involving brain magnesium availability, cognition, and sleep. RESTˣ uses this form as its magnesium source within a nighttime-focused formulation.
The listed 40 mg represents elemental magnesium, not the total weight of Magnesium L-Threonate. Research on this magnesium form should not be interpreted as proof that RESTˣ increases brain magnesium or improves sleep at this serving.
Vitamin B6: Nutritional Support
1.7 mg / 100% Daily Value per serving
Vitamin B6 participates in normal amino-acid metabolism and neurotransmitter synthesis.
It provides nutritional support alongside the RESTˣ Complex and magnesium.
RESTˣ’s intended audience is adults interested in nighttime relaxation as part of a deliberate rest-and-recovery routine.
That includes people who want to give their evenings more structure around demanding work schedules or training plans.
Persistent insomnia, unrefreshing sleep, or excessive daytime sleepiness should be evaluated rather than treated by increasing a nighttime product’s serving.
Keep the routine straightforward.
Food, protein, hydration, and an established creatine routine can remain part of the broader nutrition plan. They address different needs from nighttime relaxation.
Compatibility with other supplements or medicines depends on their actual ingredients and the individual’s health. RESTˣ should not be described as universally compatible with the rest of the lineup.
Keep Nighttime Products Separate:
Protect Sleep Earlier In The Day:
Plan caffeine and stimulant use early enough to protect bedtime.
Do not use RESTˣ to counteract an excessive or late serving of AMPˣ, REVˣ, SHREDˣ, or another energy product.
Full Serving: 1 scoop (4.5 grams)
First-Time Use: Begin with ¼ scoop to assess your individual response.
If ¼ scoop provides the desired effect, remain at that amount. Any assessment of a larger amount, including ½ scoop, should occur on a separate occasion—not by adding more the same night. A full scoop is not an automatic next step.
Mix with water. Do not dry scoop.
Do not take an additional serving because an effect is not immediately noticeable. Do not increase the amount or redose to chase a stronger effect.
Choose a setting where drowsiness will not create a safety problem. Do not drive, operate machinery, or perform activities requiring alertness while affected.
Do not treat RESTˣ as an automatic answer to every difficult night or increase the serving when effects become less noticeable.
Keep the focus on sleep consistency, manageable training demands, and the reasons rest has become difficult. Follow the Important Use Notice below when considering ongoing use.
Give recovery adequate nutritional support.
Avoid making bedtime the first opportunity to catch up on food and fluids.
Nighttime supplementation does not replace nutrition.
Build the training week around work you can recover from.
Use progressive training, appropriate rest days, and a workload that fits the rest of your life. Adjust sessions when sleep or alertness is poor.
Track progress across weeks. Recovery involves sleep, nutrition, and manageable training—not simply how strongly a nighttime product feels.
For adults 18 and older only. Do not use if pregnant or nursing.
May cause drowsiness and impaired coordination, including next-day effects. Do not drive or operate machinery while affected.
Do not combine with alcohol or other sedating substances.
Consult a healthcare professional before use if you take medication or have a medical condition, particularly sleep apnea or another breathing disorder.
Keep out of reach of children.
RESTˣ brings the RESTˣ Complex, Magnesium L-Threonate, and vitamin B6 into Steel’s X Series nighttime formulation.
Its focus is the evening transition: making room to unwind and giving recovery deliberate attention.
Finish the day. Protect your rest. Prepare for tomorrow.
