Get lean
Beyond genetics, the most important factor in skin-popping veins is how lean you are. Since body fat is commonly stored right under the skin, it's literally what's between you and your veiny self. For men, this usually requires single-digit body fat; for women, probably sub-20 percent body fat, although both genders may be able to spot a tell-tale biceps vein at slightly higher percentages.
To show off skin-popping veins, start by stripping away excess body fat.
If body fat is a problem, start by figuring out the necessary number
of calories you need to maintain your weight, then subtract 300-500
calories a day to create a significant deficit. Over the course of the
next 10-12 weeks, aim to lose 0.5-1.5 pounds per week by incrementally—but not dramatically—reducing calories and increasing exercise. Keep the pace steady, because if vascularity is the goal, you want to lose as little muscle mass as possible.
Build muscle
In my experience, you're probably best off alternating between dedicated mass-building and fat-loss phases in your quest to become both leaner and more muscular.
Chase the pump where you want to see veins
Blood-flow restriction (BFR) can help you target vascularity in a specific body part.
To specifically hone in on the pump, consider trying blood-flow restriction (BFR)
in your training. BFR involves partially restricting the veins of a
working muscle, which ultimately results in a pooling of blood, because
the veins are unable to carry it back to the heart. This massive
increase in blood usually leads to the greatest pump of your life.If you want to see veins in a particular muscle group—say, biceps, triceps, or quads—it's a no-brainer to finish off your training day for that group with a solid pump. Choose biceps curls, triceps push-downs, or leg extensions for 4 sets of 30, 15, 15, and 15 reps using BFR, resting 30 seconds between sets. Or try Layne Norton's "Legs And Arms Blast."
Do your cardio
Additionally, consistent aerobic exercise increases capillary density, or the number of capillaries (tiny blood vessels) that reach your muscles.2,3 It may even promote the formation of new capillaries.
By making cardio a staple in your exercise routine, you effectively promote more blood flow to your muscles. Over time, more veins will scratch the surface and show themselves when they're adequately filled with blood.
Take supplements for the pump
Given that NO has such a profound impact on blood flow, many supplements have been formulated to enhance its production, and ultimately your pump, during exercise. Look at your pre-workout's label or peruse online discussions, and you'll find plenty of pump supplements getting pumped up, from agmatine to glycerol to ornithine.
But for starters, you can't go wrong with these:
Citrulline
A few years ago, L-arginine was considered the premiere pump sup of the first order, because it's a known NO precursor. However, it's fallen out of favor because citrulline supplements have been shown to increase arginine levels more than arginine (and without the digestive distress some experience from arginine).Dose: 6-8 grams of citrulline malate 30-60 minutes prior to your workout. For maximal results, take in one serving rather than spreading it out in multiple doses across the day.
Nitrates
The two most common dietary nitrate supplements are beetroot and pomegranate juice or extract. Both have been shown to positively impact blood flow when taken pre-workout because of their ability to act as vasodilators.5-7Dose: Supplement with 1000 milligrams of pomegranate extract 30 minutes before exercise. For beetroot, what you take will vary depending on whether you drink a juice or extract, or take a powdered supplement. In either case, load with a daily dose for a week, and then take a dose before you exercise.
Creatine
Creatine acts as an osmolyte, meaning as it accumulates inside the muscle cell, fluid is drawn in as well. Supplementing with creatine can enhance cell swelling, lending a helping hand to your shirt-ripping pump and veiny exterior.Dose: 5 grams of creatine monohydrate per day